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From non-scattering to super-scattering with Mie-tronics Photonics Res. (IF 7.6) Pub Date : 2024-03-13 Hooman Barati Sedeh and Natalia M. Litchinitser
Electric anapoles, arising from the destructive interference of primitive and toroidal electric dipole moments, have recently emerged as a fundamental class of non-scattering sources. On the other hand, super-scattering states represent the opposite regime wherein the scattering cross-section of a subwavelength particle exceeds the single-channel limit, leading to a strong scattering behavior. Here
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Observation of accurately designed bound states in the continuum in momentum space Photonics Res. (IF 7.6) Pub Date : 2024-03-13 Jiaju Wu, Jingguang Chen, Xin Qi, Zhiwei Guo, Jiajun Wang, Feng Wu, Yong Sun, Yunhui Li, Haitao Jiang, Lei Shi, Jian Zi, and Hong Chen
Bound states in the continuum (BICs) in artificial photonic structures have received considerable attention since they offer unique methods for the extreme field localization and enhancement of light-matter interactions. Usually, the symmetry-protected BICs are located at high symmetric points, while the positions of accidental BICs achieved by tuning the parameters will appear at some points in momentum
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Subnatural-linewidth fluorescent single photons Photonics Res. (IF 7.6) Pub Date : 2024-03-13 He-Bin Zhang, Gao-Xiang Li, and Yong-Chun Liu
Subnatural-linewidth single photons are of vital importance in quantum optics and quantum information science. According to previous research, it appears difficult to utilize resonance fluorescence to generate single photons with subnatural linewidth. Here we propose a universally applicable approach to generate fluorescent single photons with subnatural linewidth, which can be implemented based on
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Heterogeneous tunable III-V-on-silicon-nitride mode-locked laser emitting wide optical spectra Photonics Res. (IF 7.6) Pub Date : 2024-03-01 Maximilien Billet, Stijn Cuyvers, Stijn Poelman, Artur Hermans, Sandeep Seema Saseendra, Tasuku Nakamura, Shinya Okamoto, Yasuhisa Inada, Kazuya Hisada, Taku Hirasawa, Joan Ramirez, Delphine Néel, Nicolas Vaissière, Jean Decobert, Philippe Soussan, Xavier Rottenberg, Gunther Roelkens, Jon Ø. Kjellman, and Bart Kuyken
We demonstrate a III-V-on-silicon-nitride mode-locked laser through the heterogeneous integration of a semiconductor optical amplifier on a passive silicon-nitride cavity using the technique of micro-transfer printing. In the initial phase of our study, we focus on optimizing the lasing wavelength to be centered at 1550 nm. This optimization is achieved by conducting experiments with 27 mode-locked
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Lead-free perovskite Cs2AgBiBr6 photodetector detecting NIR light driven by titanium nitride plasmonic hot holes Photonics Res. (IF 7.6) Pub Date : 2024-03-01 Zijian Liu, Yuying Xi, Wenbo Zeng, Ting Ji, Wenyan Wang, Sitong Guo, Linlin Shi, Rong Wen, Yanxia Cui, and Guohui Li
Lead-free perovskite Cs2AgBiBr6 manifests great potential in developing high-performance, environmentally friendly, solution-processable photodetectors (PDs). However, due to the relatively large energy bandgap, the spectrum responses of Cs2AgBiBr6 PDs are limited to the ultraviolet and visible region with wavelengths shorter than 560 nm. In this work, a broadband Cs2AgBiBr6 PD covering the ultraviolet
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Fully integrated and broadband Si-rich silicon nitride wavelength converter based on Bragg scattering intermodal four-wave mixing Photonics Res. (IF 7.6) Pub Date : 2024-02-29 Valerio Vitali, Thalía Domínguez Bucio, Hao Liu, José Manuel Luque González, Francisco Jurado-Romero, Alejandro Ortega-Moñux, Glenn Churchill, James C. Gates, James Hillier, Nikolaos Kalfagiannis, Daniele Melati, Jens H. Schmid, Ilaria Cristiani, Pavel Cheben, J. Gonzalo Wangüemert-Pérez, Íñigo Molina-Fernández, Frederic Gardes, Cosimo Lacava, and Periklis Petropoulos
Intermodal four-wave mixing (FWM) processes have recently attracted significant interest for all-optical signal processing applications thanks to the possibility to control the propagation properties of waves exciting distinct spatial modes of the same waveguide. This allows, in principle, to place signals in different spectral regions and satisfy the phase matching condition over considerably larger
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Power-efficient programmable integrated multiport photonic interferometer in CMOS-compatible silicon nitride Photonics Res. (IF 7.6) Pub Date : 2024-03-01 Shuqing Lin, Yanfeng Zhang, Zhaoyang Wu, Shihao Zeng, Qing Gao, Jiaqi Li, Xiaoqun Yu, and Siyuan Yu
Silicon nitride (SiNx ) is an appealing waveguide material choice for large-scale, high-performance photonic integrated circuits (PICs) due to its low optical loss. However, SiNx PICs require high electric power to realize optical reconfiguration via the weak thermo-optic effect, which limits their scalability in terms of device density and chip power dissipation. We report a 6-mode programmable interferometer
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Large-scale error-tolerant programmable interferometer fabricated by femtosecond laser writing Photonics Res. (IF 7.6) Pub Date : 2024-03-01 Ilya Kondratyev, Veronika Ivanova, Suren Fldzhyan, Artem Argenchiev, Nikita Kostyuchenko, Sergey Zhuravitskii, Nikolay Skryabin, Ivan Dyakonov, Mikhail Saygin, Stanislav Straupe, Alexander Korneev, and Sergei Kulik
We introduce a programmable eight-port interferometer with the recently proposed error-tolerant architecture capable of performing a broad class of transformations. The interferometer has been fabricated with femtosecond laser writing, and it is the largest programmable interferometer of this kind to date. We have demonstrated its advantageous error tolerance by showing an operation in a broad wavelength
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Long distance all-optical logic operations through a single multimode fiber empowered by wavefront shaping Photonics Res. (IF 7.6) Pub Date : 2024-03-01 Zhipeng Yu, Tianting Zhong, Huanhao Li, Haoran Li, Chi Man Woo, Shengfu Cheng, Shuming Jiao, Honglin Liu, Chao Lu, and Puxiang Lai
Multimode fibers (MMFs) are a promising solution for high-throughput signal transmission in the time domain. However, crosstalk among different optical modes within the MMF scrambles input information and creates seemingly random speckle patterns at the output. To characterize this process, a transmission matrix (TM) can be used to relate input and output fields. Recent innovations use TMs to manipulate
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Simultaneous dual-region two-photon imaging of biological dynamics spanning over 9 mm in vivo Photonics Res. (IF 7.6) Pub Date : 2024-02-26 Chi Liu, Cheng Jin, Junhao Deng, Junhao Liang, Licheng Zhang, and Lingjie Kong
Biodynamical processes, especially in system biology, that occur far apart in space may be highly correlated. To study such biodynamics, simultaneous imaging over a large span at high spatio-temporal resolutions is highly desired. For example, large-scale recording of neural network activities over various brain regions is indispensable in neuroscience. However, limited by the field-of-view (FoV) of
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Deep learning-based optical aberration estimation enables offline digital adaptive optics and super-resolution imaging Photonics Res. (IF 7.6) Pub Date : 2024-03-01 Chang Qiao, Haoyu Chen, Run Wang, Tao Jiang, Yuwang Wang, and Dong Li
Optical aberrations degrade the performance of fluorescence microscopy. Conventional adaptive optics (AO) leverages specific devices, such as the Shack–Hartmann wavefront sensor and deformable mirror, to measure and correct optical aberrations. However, conventional AO requires either additional hardware or a more complicated imaging procedure, resulting in higher cost or a lower acquisition speed
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Full-polarization angular spectrum modeling of scattered light modulation Photonics Res. (IF 7.6) Pub Date : 2024-03-01 Rongjun Shao, Chunxu Ding, Yuan Qu, Linxian Liu, Qiaozhi He, Yuejun Wu, and Jiamiao Yang
The exact physical modeling for scattered light modulation is critical in phototherapy, biomedical imaging, and free-space optical communications. In particular, the angular spectrum modeling of scattered light has attracted considerable attention, but the existing angular spectrum models neglect the polarization of photons, degrading their performance. Here, we propose a full-polarization angular
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Silicon photonic integrated interrogator for fiber-optic distributed acoustic sensing Photonics Res. (IF 7.6) Pub Date : 2024-02-26 Zhicheng Jin, Jiageng Chen, Yanming Chang, Qingwen Liu, and Zuyuan He
Distributed acoustic sensing (DAS) technology has been a promising tool in various applications. Currently, the large size and relatively high cost of DAS equipment composed of discrete devices restrict its further popularization to some degree, and the photonic integration technology offers a potential solution. In this paper, we demonstrate an integrated interrogator for DAS on the silicon-on-insulator
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Time-space multiplexed photonic-electronic digital multiplier Photonics Res. (IF 7.6) Pub Date : 2024-03-01 Wenkai Zhang, Bo Wu, Wentao Gu, Junwei Cheng, Hailong Zhou, Liao Chen, Wenchan Dong, Jianji Dong, and Xinliang Zhang
Optical computing has shown immense application prospects in the post-Moore era. However, as a crucial component of logic computing, the digital multiplier can only be realized on a small scale in optics, restrained by the limited functionalities and inevitable loss of optical nonlinearity. In this paper, we propose a time-space multiplexed architecture to realize large-scale photonic-electronic digital
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Observation of gapless corner modes of photonic crystal slabs in synthetic translation dimensions Photonics Res. (IF 7.6) Pub Date : 2024-02-26 Wen-Jin Zhang, Hao-Chang Mo, Wen-Jie Chen, Xiao-Dong Chen, and Jian-Wen Dong
Second-order topological photonic crystals support localized corner modes that deviate from the conventional bulk-edge correspondence. However, the frequency shift of corner modes spanning the photonic band gap has not been experimentally reported. Here, we observe the gapless corner modes of photonic crystal slabs within a parameter space by considering translation as an additional synthetic dimension
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Cnoidal waves and their soliton limits in single mode fiber lasers Photonics Res. (IF 7.6) Pub Date : 2024-03-01 Xiao Hu, Tupei Chen, Seongwoo Yoo, and Dingyuan Tang
Cnoidal waves are a type of nonlinear periodic wave solutions of the nonlinear dynamic equations. They are well known in fluid dynamics, but it is not the case in optics. In this paper we show both experimentally and numerically that cnoidal waves could be formed in a fiber laser either in the net normal or net anomalous cavity dispersion regime, especially because, as the pump power is increased,
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Wafer-level substrate-free YIG single crystal film for a broadband tunable terahertz isolator Photonics Res. (IF 7.6) Pub Date : 2024-03-01 Xilai Zhang, Dan Zhao, Ding Zhang, Qiang Xue, Fei Fan, Yulong Liao, Qinghui Yang, and Qiye Wen
Yttrium iron garnet (YIG) is a promising material for various terahertz applications due to its special optical properties. At present, a high-quality YIG wafer is the desire of terahertz communities and it is still challenging to prepare substrate-free YIG single crystal films. In this work, we prepared wafer-level substrate-free La:YIG single crystal films, for the first time, to our knowledge. Terahertz
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Tuning exciton dynamics by the dielectric confinement effect in quasi-two-dimensional perovskites Photonics Res. (IF 7.6) Pub Date : 2024-03-01 Minghuan Cui, Chaochao Qin, Yuanzhi Jiang, Shichen Zhang, Changjiu Sun, Mingjian Yuan, Yonggang Yang, and Yufang Liu
The dielectric confinement effect plays an essential role in optoelectronic devices. Existing studies on the relationship between the dielectric confinement and the photoelectric properties are inadequate. Herein, three organic spacers with different dielectric constants are employed to tune the exciton dynamics of quasi-two-dimensional (quasi-2D) Ruddlesden–Popper perovskite films. Femtosecond transient
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Miura origami based reconfigurable polarization converter for multifunctional control of electromagnetic waves Photonics Res. (IF 7.6) Pub Date : 2024-03-01 Zhibiao Zhu, Yongfeng Li, Zhe Qin, Lixin Jiang, Wenjie Wang, Hongya Chen, Jiafu Wang, Yongqiang Pang, and Shaobo Qu
Polarization is one of the basic characteristics of electromagnetic (EM) waves, and its flexible control is very important in many practical applications. At present, most of the multifunction polarization metasurfaces are electrically tunable based on PIN and varactor diodes, which are easy to operate and have strong real-time performance. However, there are still some problems in them, such as few
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Multichannel coupling induced topological insulating phases with full multimerization Photonics Res. (IF 7.6) Pub Date : 2024-03-01 Jun Li, Yaping Yang, and C.-M. Hu
We propose and experimentally realize a class of quasi-one-dimensional topological lattices whose unit cells are constructed by coupled multiple identical resonators, with uniform hopping and inversion symmetry. In the presence of coupling-path-induced effective zero hopping within the unit cells, the systems are characterized by complete multimerization with degenerate −1 energy edge states for open
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Independent control of circularly polarized light with exceptional topological phase coding metasurfaces Photonics Res. (IF 7.6) Pub Date : 2024-03-01 Yicheng Li, Shicheng Wan, Shaoxuan Deng, Zhengwei Deng, Bo Lv, Chunying Guan, Jun Yang, Andrey Bogdanov, Pavel Belov, and Jinhui Shi
Exceptional points, as degenerate points of non-Hermitian parity-time symmetric systems, have many unique physical properties. Due to its flexible control of electromagnetic waves, a metasurface is frequently used in the field of nanophotonics. In this work, we developed a parity-time symmetric metasurface and implemented the 2π topological phase surrounding an exceptional point. Compared with Pancharatnam-Berry
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Indefinite metacavities coupled to a mirror: bound states in the continuum with anomalous resonance scaling Photonics Res. (IF 7.6) Pub Date : 2024-03-01 Qiang Zhang, Peixiang Li, Zhiyuan Gu, Shaoding Liu, and Zejun Duan
Indefinite metacavities (IMCs) made of hyperbolic metamaterials show great advantages in terms of extremely small mode volume due to large wave vectors endowed by the unique hyperbolic dispersion. However, quality (Q ) factors of IMCs are limited by Ohmic loss of metals and radiative loss of leaked waves. Despite the fact that Ohmic loss of metals is inevitable in IMCs, the radiative loss can be further
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Experimental distillation of tripartite quantum steering with an optimal local filtering operation Photonics Res. (IF 7.6) Pub Date : 2024-03-01 Qian-Xi Zhang, Xiao-Xu Fang, and He Lu
Multipartite Einstein-Podolsky-Rosen (EPR) steering admits multipartite entanglement in the presence of uncharacterized verifiers, enabling practical applications in semi-device-independent protocols. Such applications generally require stronger steerability, while the unavoidable noise weakens steerability and consequently degrades the performance of quantum information processing. Here, we propose
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Extreme single-excitation subradiance from two-band Bloch oscillations in atomic arrays Photonics Res. (IF 7.6) Pub Date : 2024-03-01 Luojia Wang, Da-Wei Wang, Luqi Yuan, Yaping Yang, and Xianfeng Chen
Atomic arrays provide an important quantum optical platform with photon-mediated dipole–dipole interactions that can be engineered to realize key applications in quantum information processing. A major obstacle for such applications is the fast decay of the excited states. By controlling two-band Bloch oscillations of single excitation in an atomic array under an external magnetic field, here we show
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Full-Stokes metasurface polarimetry requiring only a single measurement Photonics Res. (IF 7.6) Pub Date : 2024-03-01 Chenglong Zheng, Hui Li, Jingyu Liu, Mengguang Wang, Huaping Zang, Yan Zhang, and Jianquan Yao
Polarization is crucial in various fields such as imaging, sensing, and substance detection. A compact, fast, and accurate polarization detection device is vital for these applications. Herein, we demonstrate a multifocus metalens for terahertz polarization detection that requires only a single measurement to obtain complete polarization parameters and reconstruct the polarization state of the incident
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Fully integrated and broadband Si-rich silicon nitride wavelength converter based on Bragg scattering intermodal four-wave mixing Photonics Res. (IF 7.6) Pub Date : 2024-02-29 Valerio Vitali, Thalía Domínguez Bucio, Hao Liu, José Manuel Luque González, Francisco Jurado-Romero, Alejandro Ortega-Moñux, Glenn Churchill, James C. Gates, James Hillier, Nikolaos Kalfagiannis, Daniele Melati, Jens H. Schmid, Ilaria Cristiani, Pavel Cheben, J. Gonzalo Wangüemert-Pérez, Íñigo Molina-Fernández, Frederic Gardes, Cosimo Lacava, and Periklis Petropoulos
Intermodal four-wave mixing (FWM) processes have recently attracted significant interest for all-optical signal processing applications thanks to the possibility to control the propagation properties of waves exciting distinct spatial modes of the same waveguide. This allows, in principle, to place signals in different spectral regions and satisfy the phase matching condition over considerably larger
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Simultaneous dual-region two-photon imaging of biological dynamics spanning over 9 mm in vivo Photonics Res. (IF 7.6) Pub Date : 2024-02-26 Chi Liu, Cheng Jin, Junhao Deng, Junhao Liang, Licheng Zhang, and Lingjie Kong
Biodynamical processes, especially in system biology, that occur far apart in space may be highly correlated. To study such biodynamics, simultaneous imaging over a large span at high spatio-temporal resolutions is highly desired. For example, large-scale recording of neural network activities over various brain regions is indispensable in neuroscience. However, limited by the field-of-view (FoV) of
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Silicon photonic integrated interrogator for fiber-optic distributed acoustic sensing Photonics Res. (IF 7.6) Pub Date : 2024-02-26 Zhicheng Jin, Jiageng Chen, Yanming Chang, Qingwen Liu, and Zuyuan He
Distributed acoustic sensing (DAS) technology has been a promising tool in various applications. Currently, the large size and relatively high cost of DAS equipment composed of discrete devices restrict its further popularization to some degree, and the photonic integration technology offers a potential solution. In this paper, we demonstrate an integrated interrogator for DAS on the silicon-on-insulator
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Observation of gapless corner modes of photonic crystal slabs in synthetic translation dimensions Photonics Res. (IF 7.6) Pub Date : 2024-02-26 Wen-Jin Zhang, Hao-Chang Mo, Wen-Jie Chen, Xiao-Dong Chen, and Jian-Wen Dong
Second-order topological photonic crystals support localized corner modes that deviate from the conventional bulk-edge correspondence. However, the frequency shift of corner modes spanning the photonic band gap has not been experimentally reported. Here, we observe the gapless corner modes of photonic crystal slabs within a parameter space by considering translation as an additional synthetic dimension
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Chiral forces in longitudinally invariant dielectric photonic waveguides Photonics Res. (IF 7.6) Pub Date : 2024-02-26 Josep Martínez-Romeu, Iago Diez, Sebastian Golat, Francisco J. Rodríguez-Fortuño, and Alejandro Martínez
We calculate numerically the optical chiral forces in rectangular cross-section dielectric waveguides for potential enantiomer separation. Our study considers force strength and time needed for separating chiral nanoparticles, mainly via quasi-TE guided modes at short wavelengths (405 nm) and the 90°-phase-shifted combination of quasi-TE and quasi-TM modes at longer wavelengths (1310 nm). Particle
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Cavity continuum Photonics Res. (IF 7.6) Pub Date : 2024-02-08 Fan Cheng, Vladimir Shuvayev, Mark Douvidzon, Lev Deych, and Tal Carmon
We experimentally demonstrate and numerically analyze large arrays of whispering gallery resonators. Using fluorescent mapping, we measure the spatial distribution of the cavity ensemble’s resonances, revealing that light reaches distant resonators in various ways, including while passing through dark gaps, resonator groups, or resonator lines. Energy spatially decays exponentially in the cavities
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Four-dimensional direct detection receiver enabling Jones-space field recovery with phase and polarization diversity Photonics Res. (IF 7.6) Pub Date : 2024-02-08 Qi Wu, Yixiao Zhu, Xueyang Li, Hexun Jiang, Chen Cheng, Mengfan Fu, Yikun Zhang, Qunbi Zhuge, Zhaohui Li, and Weisheng Hu
Data centers, the engines of the global Internet, rely on powerful high-speed optical interconnects. In optical fiber communication, classic direct detection captures only the intensity of the optical field, while the coherent detection counterpart utilizes both phase and polarization diversities at the expense of requiring a narrow-linewidth and high-stability local oscillator (LO). Herein, we propose
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Harnessing the power of complex light propagation in multimode fibers for spatially resolved sensing Photonics Res. (IF 7.6) Pub Date : 2024-02-08 Darcy L. Smith, Linh V. Nguyen, Mohammad I. Reja, Erik P. Schartner, Heike Ebendorff-Heidepriem, David J. Ottaway, and Stephen C. Warren-Smith
The propagation of coherent light in multimode optical fibers results in a speckled output that is both complex and sensitive to environmental effects. These properties can be a powerful tool for sensing, as small perturbations lead to significant changes in the output of the fiber. However, the mechanism to encode spatially resolved sensing information into the speckle pattern and the ability to extract
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Mode-insensitive and mode-selective optical switch based on asymmetric Y-junctions and MMI couplers Photonics Res. (IF 7.6) Pub Date : 2024-02-08 Shijie Sun, Qidong Yu, Yuanhua Che, Tianhang Lian, Yuhang Xie, Daming Zhang, and Xibin Wang
Driven by the large volume demands of data in transmission systems, the number of spatial modes supported by mode-division multiplexing (MDM) systems is being increased to take full advantage of the parallelism of the signals in different spatial modes. As a key element for photonic integrated circuits, the multimode waveguide optical switch (MWOS) is playing an important role for data exchange and
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10 Gb/s classical secure key distribution based on temporal steganography and private chaotic phase scrambling Photonics Res. (IF 7.6) Pub Date : 2024-02-01 Zhensen Gao, Zhitao Deng, Lihong Zhang, Xulin Gao, Yuehua An, Anbang Wang, Songnian Fu, Zhaohui Li, Yuncai Wang, and Yuwen Qin
Secure distribution of high-speed digital encryption/decryption keys over a classical fiber channel is strongly pursued for realizing perfect secrecy communication systems. However, it is still challenging to achieve a secret key rate in the order of tens of gigabits per second to be comparable with the bit rate of commercial fiber-optic systems. In this paper, we propose and experimentally demonstrate
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Optical colorimetric LiTaO3 wafers for high-precision lithography on frequency control of SAW devices Photonics Res. (IF 7.6) Pub Date : 2024-02-01 Ming Hui Fang, Yinong Xie, Fangqi Xue, Zhilin Wu, Jun Shi, Sheng Yu Yang, Yilin Liu, Zhihuang Liu, Hsin Chi Wang, Fajun Li, Qing Huo Liu, and Jinfeng Zhu
Surface acoustic wave (SAW) resonators based on lithium tantalate (LT, LiTaO3 ) wafers are crucial elements of mobile communication filters. The use of intrinsic LT wafers typically brings about low fabrication accuracy of SAW resonators due to strong UV reflection in the lithography process. This hinders their resonance frequency control seriously in industrial manufacture. LT doping and chemical
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Coherent link between a Ti:sapphire comb and a 1.5 μm laser via nonlinear interaction in photonic crystal fiber Photonics Res. (IF 7.6) Pub Date : 2024-02-01 Yuan Yao, Haosen Shi, Guang Yang, Bo Li, Congyu Wang, Hongfu Yu, Longsheng Ma, and Yanyi Jiang
Optical clock networks have distinct advantages for the dissemination of time/frequency, geodesy, and fundamental research. To realize such a network, the telecom band and optical atomic clocks have to be coherently bridged. Since the telecom band and optical atomic clocks reside in a distinct spectral region, second-harmonic generation is usually introduced to bridge the large frequency gap. In this
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Circular polarization-selective optical, photothermal, and optofluidic effects in chiral metasurfaces Photonics Res. (IF 7.6) Pub Date : 2024-02-01 Cuiping Ma, Peng Yu, Zhimin Jing, Yisong Zhu, Peihang Li, Wenhao Wang, Hongxing Xu, Yanning Zhang, Liang Pan, Tae-Youl Choi, Arup Neogi, Alexander O. Govorov, and Zhiming Wang
Circular dichroism (CD) is extensively used in various material systems for applications including biological detection, enantioselective catalysis, and chiral separation. This paper introduces a chiral absorptive metasurface that exhibits a circular polarization-selective effect in dual bands—positive and negative CD peaks at short wavelengths and long wavelengths, respectively. Significantly, we
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Visible-frequency nonvolatile reconfigurable Janus metasurfaces for dual-wavelength-switched and spin-asymmetric holograms Photonics Res. (IF 7.6) Pub Date : 2024-02-01 Huan Yuan, Zheqiang Zhong, and Bin Zhang
Janus metasurface holography with asymmetric transmission characteristics provides new degrees of freedom for multiplexing technologies. However, earlier metasurfaces with asymmetrical transmission faced limitations in terms of tunability and multifunctionality. In this study, we propose a metasurface color holographic encryption scheme with dynamic switching and asymmetric transmission at visible
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Observation of maximal intrinsic chirality empowered by dual quasi-bound states in the continuum in a planar metasurface Photonics Res. (IF 7.6) Pub Date : 2024-01-29 Xin Qi, Jiaju Wu, Feng Wu, Song Zhao, Chao Wu, Yueyang Min, Mina Ren, Yufei Wang, Haitao Jiang, Yunhui Li, Zhiwei Guo, Yaping Yang, Wanhua Zheng, Hong Chen, and Yong Sun
Metasurfaces with spin-selective transmission play an increasingly critical role in realizing optical chiral responses, especially for strong intrinsic chirality, which is limited to complex three-dimensional geometry. In this paper, we propose a planar metasurface capable of generating maximal intrinsic chirality and achieving dual-band spin-selective transmission utilizing dual quasi-bound states
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Review on the terahertz metasensor: from featureless refractive index sensing to molecular identification Photonics Res. (IF 7.6) Pub Date : 2024-01-29 Jiaming Lyu, Lihao Huang, Lin Chen, Yiming Zhu, and Songlin Zhuang
The terahertz (THz) wave is at the intersection between photonics and electronics in the electromagnetic spectrum. Since the vibration mode of many biomedical molecules and the weak interaction mode inside the molecules fall in the THz regime, utilizing THz radiation as a signal source to operate substance information sensing has its unique advantages. Recently, the metamaterial sensor (metasensor)
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Impact of doping profiles on the formation of laser-active centers in bismuth-doped GeO2–SiO2 glass fibers Photonics Res. (IF 7.6) Pub Date : 2024-02-01 Sergey Alyshev, Alexander Vakhrushev, Aleksandr Khegai, Elena Firstova, Konstantin Riumkin, Mikhail Melkumov, Lyudmila Iskhakova, Andrey Umnikov, and Sergei Firstov
Multi-wavelength-band transmission technology based on the exploitation of the extended spectral region is considered as a potential approach to increase the transmission capacity in the deployed fiber-optic communication infrastructure. The development of optical amplifiers operating in the O-, E-, S-, and U-telecom bands is an extremely important challenge for the successful implementation of this
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24.9-GHz-bandwidth VCSEL enables 170-Gbit/s OFDM, GFDM, and DMT transmissions Photonics Res. (IF 7.6) Pub Date : 2024-02-01 Wei-Li Wu, Chih-Hsien Cheng, Atsushi Matsumoto, Kouichi Akahane, Yun-Cheng Yang, Borching Su, Chao-Hsin Wu, Milton Feng, and Gong-Ru Lin
The direct modulation and fiber transmission performances of a bi-layer-oxide-confined 850-nm vertical cavity surface emitting laser (VCSEL) containing an emission aperture size of 3.5 μm with versatile novel complex data formats are compared. With delivering quadrature amplitude modulation-orthogonal frequency-division multiplexing (QAM-OFDM), generalized frequency-division multiplexing (GFDM), and
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Computational and dark-field ghost imaging with ultraviolet light Photonics Res. (IF 7.6) Pub Date : 2024-01-29 Jiaqi Song, Baolei Liu, Yao Wang, Chaohao Chen, Xuchen Shan, Xiaolan Zhong, Ling-An Wu, and Fan Wang
Ultraviolet (UV) imaging enables a diverse array of applications, such as material composition analysis, biological fluorescence imaging, and detecting defects in semiconductor manufacturing. However, scientific-grade UV cameras with high quantum efficiency are expensive and include complex thermoelectric cooling systems. Here, we demonstrate a UV computational ghost imaging (UV-CGI) method to provide
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Reflective ultrathin light-sheet microscopy with isotropic 3D resolutions Photonics Res. (IF 7.6) Pub Date : 2024-02-01 Yue Wang, Dashan Dong, Wenkai Yang, Renxi He, Ming Lei, and Kebin Shi
Light-sheet fluorescence microscopy (LSFM) has played an important role in bio-imaging due to its advantages of high photon efficiency, fast speed, and long-term imaging capabilities. The perpendicular layout between LSFM excitation and detection often limits the 3D resolutions as well as their isotropy. Here, we report on a reflective type light-sheet microscope with a mini-prism used as an optical
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Deep optics preconditioner for modulation-free pyramid wavefront sensing Photonics Res. (IF 7.6) Pub Date : 2024-02-01 Felipe Guzmán, Jorge Tapia, Camilo Weinberger, Nicolás Hernández, Jorge Bacca, Benoit Neichel, and Esteban Vera
The pyramid wavefront sensor (PWFS) can provide the sensitivity needed for demanding adaptive optics applications, such as imaging exoplanets using the future extremely large telescopes of over 30 m of diameter (D). However, its exquisite sensitivity has a limited linear range of operation, or dynamic range, although it can be extended through the use of beam modulation—despite sacrificing sensitivity
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Linear group delay spectral interferometry for full-range precision absolute length metrology Photonics Res. (IF 7.6) Pub Date : 2024-02-01 Jindong Wang, Jingsheng Huang, Qihua Liu, Wei Du, Fumin Zhang, and Tao Zhu
The optical frequency comb serves as a powerful tool for distance measurement by integrating numerous stable optical modes into interferometric measurements, enabling unprecedented absolute measurement precision. Nonetheless, due to the periodicity of its pulse train, the comb suffers from measurement dead zones and ambiguities, thereby impeding its practical applications. Here, we present a linear
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Refractive index sensing based on a twisted nano-kirigami metasurface Photonics Res. (IF 7.6) Pub Date : 2024-01-29 Shuqi Qiao, Xiaochen Zhang, Qinghua Liang, Yang Wang, Chang-Yin Ji, Xiaowei Li, Lan Jiang, Shuai Feng, Honglian Guo, and Jiafang Li
Plasmonic sensing technology has attracted considerable attention for high sensitivity due to the ability to effectively localize and manipulate light. In this study, we demonstrate a refractive index (RI) sensing scheme based on open-loop twisted meta-molecule arrays using the versatile nano-kirigami principle. RI sensing has the features of a small footprint, flexible control, and simple preparation
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Controllable shaping of high-index dielectric nanoparticles by exploiting the giant optical force of femtosecond laser pulses Photonics Res. (IF 7.6) Pub Date : 2024-02-01 Yuheng Mao, Shuwen Bai, Mingcheng Panmai, Lidan Zhou, Shimei Liu, Shulei Li, Haiying Liu, Haihua Fan, Jun Dai, and Sheng Lan
Nanoparticles made of different materials usually support optical resonances in the visible to near infrared spectral range, such as the localized surface plasmons observed in metallic nanoparticles and the Mie resonances observed in dielectric ones. Such optical resonances, which are important for practical applications, depend strongly on the morphologies of nanoparticles. Laser irradiation is a
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Electrically tunable phase-change metasurface for dynamic infrared thermal camouflage Photonics Res. (IF 7.6) Pub Date : 2024-02-01 Yufeng Xiong, Yunzheng Wang, Chao Feng, Yaolan Tian, Liang Gao, Jun-Lei Wang, Zhuang Zhuo, and Xian Zhao
Dynamic infrared thermal camouflage technology has attracted extensive attention due to its ability to thermally conceal targets in various environmental backgrounds by tuning thermal emission. The use of phase change materials (PCMs) offers numerous advantages, including zero static power, rapid modulation rate, and large emissivity tuning range. However, existing PCM solutions still encounter several
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Indium-doped perovskite-related cesium copper halide scintillator films for high-performance X-ray imaging Photonics Res. (IF 7.6) Pub Date : 2024-02-01 Rui Liu, Zhiyong Liu, Chengxu Lin, Guangda Niu, Xuning Zhang, Bo Sun, Tielin Shi, and Guanglan Liao
Scintillators are widely utilized in high-energy radiation detection in view of their high light yield and short fluorescence decay time. However, constrained by their current shortcomings, such as complex fabrication procedures, high temperature, and difficulty in the large scale, it is difficult to meet the increasing demand for cost-effective, flexible, and environment-friendly X-ray detection using
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Mode-switchable dual-color infrared quantum cascade detector Photonics Res. (IF 7.6) Pub Date : 2024-01-29 Yixuan Zhu, Shenqiang Zhai, Kun Li, Kai Guo, Qiangqiang Guo, Jinchuan Zhang, Shuman Liu, Lijun Wang, Fengqi Liu, and Junqi Liu
In this paper, a patch-antenna-array enhanced quantum cascade detector with freely switchable operating modes among mid-wave, long-wave, and dual-color was proposed and discussed. The dual-color absorption occurs in a single active region through an optimized coupled miniband diagonal-transition subbands arrangement, and a successful separation of the operation regimes was realized by two nested antenna
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Diffraction limit of light in curved space Photonics Res. (IF 7.6) Pub Date : 2024-01-29 Jingxuan Zhang, Chenni Xu, Patrick Sebbah, and Li-Gang Wang
Overcoming the diffraction limit is crucial for obtaining high-resolution images and observing fine microstructures. With this conventional difficulty still puzzling us and the prosperous development of wave dynamics of light interacting with gravitational fields in recent years, how spatial curvature affects the diffraction limit is an attractive and important question. Here we investigate the issue
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Ultracompact silicon on-chip polarization controller Photonics Res. (IF 7.6) Pub Date : 2024-01-05 Weike Zhao, Yingying Peng, Mingyu Zhu, Ruoran Liu, Xiaolong Hu, Yaocheng Shi, and Daoxin Dai
On-chip polarization controllers are extremely important for various optical systems. In this paper, a compact and robust silicon-based on-chip polarization controller is proposed and demonstrated by integrating a special polarization converter and phase shifters. The special polarization converter consists of a 1×1 Mach–Zehnder interferometer with two polarization-dependent mode converters at the
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Electron-beam-driven anomalous Doppler effects in Smith–Purcell radiation Photonics Res. (IF 7.6) Pub Date : 2023-12-21 Xiaoqiuyan Zhang, Tianyu Zhang, Zhuocheng Zhang, Xingxing Xu, Diwei Liu, Zhaoyun Duan, Yanyu Wei, Yubin Gong, Liang Jie Wong, and Min Hu
The interaction between electrons and matter is an effective means of light emission, through mechanisms including Cherenkov radiation and Smith–Purcell radiation (SPR). In this study, we show that the superlight inverse Doppler effects can be realized in reverse Smith–Purcell radiation excited by a free electron beam with a homogeneous substrate. In particular, we find that two types of anomalous
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Dynamic multifunctional metasurfaces: an inverse design deep learning approach Photonics Res. (IF 7.6) Pub Date : 2023-12-22 Zhi-Dan Lei, Yi-Duo Xu, Cheng Lei, Yan Zhao, and Du Wang
Optical metasurfaces (OMs) offer unprecedented control over electromagnetic waves, enabling advanced optical multiplexing. The emergence of deep learning has opened new avenues for designing OMs. However, existing deep learning methods for OMs primarily focus on forward design, which limits their design capabilities, lacks global optimization, and relies on prior knowledge. Additionally, most OMs are
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Passive imaging through dense scattering media Photonics Res. (IF 7.6) Pub Date : 2023-12-22 Yaoming Bian, Fei Wang, Yuanzhe Wang, Zhenfeng Fu, Haishan Liu, Haiming Yuan, and Guohai Situ
Imaging through non-static and optically thick scattering media such as dense fog, heavy smoke, and turbid water is crucial in various applications. However, most existing methods rely on either active and coherent light illumination, or image priors, preventing their application in situations where only passive illumination is possible. In this study we present a universal passive method for imaging
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Single-shot non-line-of-sight imaging based on chromato-axial differential correlography Photonics Res. (IF 7.6) Pub Date : 2023-12-21 Lingfeng Liu, Shuo Zhu, Wenjun Zhang, Lianfa Bai, Enlai Guo, and Jing Han
Non-line-of-sight (NLOS) imaging is a challenging task aimed at reconstructing objects outside the direct view of the observer. Nevertheless, traditional NLOS imaging methods typically rely on intricate and costly equipment to scan and sample the hidden object. These methods often suffer from restricted imaging resolution and require high system stability. Herein, we propose a single-shot high-resolution
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Distributed phase-matching measurement for dynamic strain and temperature sensing based on stimulated Brillouin scattering enhanced four-wave mixing Photonics Res. (IF 7.6) Pub Date : 2023-12-22 Yuan Wang, Pedro Tovar, Juntong Yang, Liang Chen, and Xiaoyi Bao
A Brillouin dynamic grating (BDG) can be used for distributed birefringence measurement in optical fibers, offering high sensitivity and spatial resolution for sensing applications. However, it is quite a challenge to simultaneously achieve dynamic measurements with both high accuracy and high spatial resolution. In this work, we propose a sensing mechanism to achieve distributed phase-matching measurement
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Mutual aid instead of mutual restraint: interactive probing for topological charge and phase of a vortex beam of large aberrations Photonics Res. (IF 7.6) Pub Date : 2023-12-22 Shengyang Wu, Benli Yu, and Lei Zhang
An imperfect propagation environment or optical system would introduce wavefront aberrations to vortex beams. The phase aberrations and orbital angular momentum in a vortex beam are proved to be mutually restrictive in parameter measurement. Aberrations make traditional topological charge (TC) probing methods ineffective while the phase singularity makes phase retrieval difficult due to the aliasing