Narrow-Linewidth GaN-on-Si Laser Diode with Slot Gratings. - Tang, Yongjun; Feng, Meixin; Liu, Jianxun; Fan, Shizhao; Sun, Xiujian; Sun, Qian; Zhang, Shuming; Liu, Tong; Kong, Yaping; Huang, Zengli; Ikeda, Masao; Yang, Hui (Nanomaterials (2079-4991), 2021)