Abstract

For the practical implementation of microdisk resonators as active nanophotonic devices, it is essential that they can be electrically driven. However, it is difficult to inject current in such small-scale devices without severely degrading their optical properties. We demonstrate the successful fabrication of an electrically injected microdisk based on Eu-doped GaN, in which an SiO₂ spacer is used to prevent the interaction of the metal contact with the optical resonances. The microdisk shows Eu-related emission upon electrical injection and from the observed resonance peak, a cavity quality (Q)-factor of 3400 is concluded.

© 2023 Optica Publishing Group

Flexible GaN-based ultraviolet microdisk lasers on PET substrate

Peng Gu, Shuai Yang, Lilong Ma, Tao Yang, Xin Hou, Yang Mei, Leiying Ying, Hao Long, and Baoping Zhang
Opt. Lett. 48(15) 4117-4120 (2023)

InGaN/GaN microdisks enabled by nanoporous GaN cladding

Ge Yuan, Cheng Zhang, Kanglin Xiong, and Jung Han
Opt. Lett. 43(22) 5567-5570 (2018)

On-chip erbium–ytterbium-co-doped lithium niobate microdisk laser with an ultralow threshold

Qiang Luo, Chen Yang, Zhenzhong Hao, Ru Zhang, Rui Ma, Dahuai Zheng, Hongde Liu, Xuanyi Yu, Feng Gao, Fang Bo, Yongfa Kong, Guoquan Zhang, and Jingjun Xu
Opt. Lett. 48(13) 3447-3450 (2023)

GaN microdisk with direct coupled waveguide for unidirectional whispering-gallery mode emission

Chap Hang To, Wai Yuen Fu, Kwai Hei Li, Yuk Fai Cheung, and Hoi Wai Choi
Opt. Lett. 45(4) 791-794 (2020)

Fabricating and investigating a beveled mesa with a specific inclination angle to improve electrical and optical performances for GaN-based micro-light-emitting diodes

Chunshuang Chu, Yaru Jia, Sheng Hang, Yongfei Chen, Tong Jia, KangKai Tian, Yonghui Zhang, and Zi-Hui Zhang
Opt. Lett. 48(22) 5863-5866 (2023)