Femtosecond Laser Printing of Single Ge and SiGe Nanoparticles with Electric and Magnetic Optical Resonances,ACS Photonics

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Femtosecond Laser Printing of Single Ge and SiGe Nanoparticles with Electric and Magnetic Optical Resonances
ACS Photonics ( IF 6.5 ) Pub Date : 2018-01-12 00:00:00 , DOI: 10.1021/acsphotonics.7b01275
Denis M. Zhigunov ₁ , Andrey B. Evlyukhin ₂ , Alexander S. Shalin ₃ , Urs Zywietz ₂ , Boris N. Chichkov _{2,

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Affiliation

A recently introduced femtosecond laser printing technique was further developed for the fabrication of crystalline single Ge and SiGe nanoparticles (NPs). Amorphous Ge and SiGe thin films deposited by e-beam evaporation on a transparent substrate were used as donors. The developed approach is based on a laser-induced forward transfer process, which provides an opportunity for NP-controlled positioning on different types of receiver substrates. The size of the generated nanoparticles can be varied from about 100 to 300 nm depending on the laser pulse energy and wavelength. The crystallinity and composition of nanoparticles are both confirmed by the Raman spectroscopy measurements. The experimental visible scattering spectra of single nanoparticles are found to be well coincident with theoretical simulations performed on the basis of Mie theory. It is demonstrated that Ge and SiGe nanoparticles are characterized by electric and magnetic dipole resonances in the visible and near-infrared spectral ranges, which is promising for photonic applications.

中文翻译：

飞秒激光印刷具有电和磁光学共振的单个Ge和SiGe纳米粒子

飞秒激光印刷技术被进一步开发，用于制造单晶的Ge和SiGe纳米粒子（NPs）。通过电子束蒸发在透明基板上沉积的非晶Ge和SiGe薄膜用作施主。所开发的方法基于激光诱导的正向传输过程，这为在不同类型的接收器基板上进行NP控制的定位提供了机会。取决于激光脉冲能量和波长，所产生的纳米颗粒的尺寸可以在约100至300nm之间变化。纳米颗粒的结晶度和组成均通过拉曼光谱测量法证实。发现单个纳米颗粒的实验可见散射光谱与基于米氏理论进行的理论模拟非常吻合。

更新日期：2018-01-12

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