1. Spectral polarization-encoding of broadband laser pulses by optical rotatory dispersion and its applications in spectral manipulation*
- Author
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Cai Yi, Xiaowei Lu, Huangcheng Shangguan, Zhenkuan Chen, Qinggang Lin, Congying Wang, Shixiang Xu, Jiahe Lin, Xuanke Zeng, and Jingzhen Li
- Subjects
Optics ,Materials science ,business.industry ,Encoding (memory) ,Broadband laser ,General Physics and Astronomy ,business ,Polarization (waves) ,Optical rotatory dispersion - Abstract
We propose a kind of spectral polarization-encoding (SPE) for broadband light pulses, which is realized by inducing optical rotatory dispersion (ORD), and decoded by compensating ORD. Combining with polarization-sensitive devices, SPE can not only work to control polarization-dependent transmission for central wavelength or bandwidth-tunable filtering, but also can be used for broadband regenerative or multi-pass amplification with a polarization-dependent gain medium to improve output bandwidth. SPE is entirely passive thus very simple to be designed and aligned. By using an ORD crystal with a good transmission beyond 3-μm mid-infrared region, e.g., AgGaS2, SPE promises to be applied for the wavelength tuning lasers in mid-infrared region, where the tunning devices are rather under developed compared with those in visible and near-infrared region.
- Published
- 2021
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