Lei Han, Yuanbin Gao, Sheng Hang, Chunshuang Chu, Yonghui Zhang, Quan Zheng, Qing Li, Zi-Hui Zhang. Impact of p-AlGaN/GaN hole injection layer on GaN-based vertical cavity surface emitting laser diodes [Invited][J]. Chinese Optics Letters, 2022, 20(3): 031402