All‐Photonic Miniature Perovskite Encoder with a Terahertz Bandwidth,Laser & Photonics Reviews

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All‐Photonic Miniature Perovskite Encoder with a Terahertz Bandwidth
Laser & Photonics Reviews ( IF 9.8 ) Pub Date : 2020-03-01 , DOI: 10.1002/lpor.201900398
Yichi Zhong ₁ , Bing Tang ₂ , Meng Fei ₁ , Qi Jie ₁ , Jiqing Tan ₁ , Qiangqiang Wang ₁ , Shuang Liang ₁ , Junjie Du ₁ , Long Zhang _{2,

3} , Hongxing Dong _{2,

3} , Wei Xie ₁

Affiliation

Perovskites—energy‐conversion materials with light‐absorbing and electronic transport properties—have shown excellent features for developing photovoltaic devices and novel light sources. It is an open challenge to extend the application of perovskites, such as to the field of ultrafast information coding. This work demonstrates a terahertz coding of optical polarization degree based on a metal halide perovskite nanostructure. Sub‐micrometer spheres of all‐inorganic CsPbBr₃ perovskite are fabricated with high quality and stability. By employing this perovskite nanostructure, the ultrafast coding of degree of linear polarization (DLP) is achieved with a tunable bandwidth of up to 0.1 THz. Moreover, the DLP coding can be combined with the coding of another parameter, i.e., the shape of the lasing pulse, which improves the high‐bandwidth encoder from binary to ternary. The all‐photonic miniature encoder generates multiple‐parameter THz code sequences, stimulating the development of perovskite‐based microdevices for ultrafast information processing.

中文翻译：

具有太赫兹带宽的全光子微型钙钛矿编码器

钙钛矿是一种具有光吸收和电子传输特性的能量转换材料，在开发光伏器件和新型光源方面表现出出色的功能。扩展钙钛矿的应用是一个公开的挑战，例如在超快速信息编码领域。这项工作演示了基于金属卤化物钙钛矿纳米结构的光偏振度的太赫兹编码。全无机CsPbBr _3的亚微米球钙钛矿具有高质量和稳定性。通过采用这种钙钛矿纳米结构，可以实现线性偏振度（DLP）的超快速编码，可调带宽高达0.1 THz。此外，DLP编码可与其他参数（即激光脉冲的形状）的编码结合使用，从而将高带宽编码器从二进制转换为三进制。全光子微型编码器生成多参数太赫兹代码序列，从而刺激了基于钙钛矿的微设备的发展，可用于超快信息处理。

更新日期：2020-03-01

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