Liu Yingying, Zhang Xing, Huang Youwen, Zhang Jianwei, Hofmann Werner, Ning Yongqiang, Wang Lijun
Appl Opt. 2018 Jun 1;57(16):4486-4490. doi: 10.1364/AO.57.004486.
A polarization-stable single-mode 894 nm vertical cavity surface emitting laser (VCSEL) with an orthogonal polarization suppression ratio of 30 dB, even at a temperature up to 80°C, was achieved for atomic clock applications by utilizing shallow-surface gratings. An improved grating VCSEL fabrication technology for mass production was also proposed by taking advantage of the displacement Talbot lithography. The multi-mode grating VCSEL was also measured for other applications that need polarization stability, such as doubled-data-rate polarization multiplexed free-space links.
通过利用浅表面光栅，实现了一种偏振稳定的单模894纳米垂直腔面发射激光器（VCSEL），即使在高达80°C的温度下，其正交偏振抑制比也能达到30分贝，可用于原子钟应用。还利用位移塔尔博特光刻技术提出了一种用于大规模生产的改进型光栅VCSEL制造技术。还对多模光栅VCSEL进行了测量，以用于其他需要偏振稳定性的应用，如双倍数据速率偏振复用自由空间链路。
