%A Lei Xiang(向磊), Xing Zhang(张星), Jian-Wei Zhang(张建伟), Yong-Qiang Ning(宁永强), Werner Hofmann, Li-Jun Wang(王立军) %T Stable single-mode operation of 894.6 nm VCSEL at high temperatures for Cs atomic sensing %0 Journal Article %D 2017 %J Chin. Phys. B %R 10.1088/1674-1056/26/7/074209 %P 74209-074209 %V 26 %N 7 %U {https://cpb.iphy.ac.cn/CN/abstract/article_119787.shtml} %8 2017-07-05 %X

In this paper, stable single-mode operation at high temperatures is produced by the surface-relief-integrated vertical cavity surface emitting laser (VCSEL). The gain-cavity mode detuning technique is employed to realize high operating temperatures for the VCSEL. The surface relief is etched in the centre of the top side as a mode discriminator for the fundamental mode output, and the threshold current minimum is 1.94 mA at high temperatures by the gain-cavity mode detuning technique. Maximum single-fundamental-mode output power of 0.45 mW at 80℃ is obtained, and the side mode suppression ratios (SMSRs) are more than 30 dB with increasing temperature and current, respectively.