Abstract

The choice of a laser gain medium is crucial in achieving efficient and high-power outputs of optically stimulated WGM microcavity lasers. This work employs an Yb:YAG crystalline film as the gain medium for the microdisk laser. The Yb:YAG crystalline film is exfoliated from a bulk of a Yb:YAG crystal by the ion-implantation-enhanced etching method. The crystalline film is shaped into a microdisk through focused ion beam milling. This Yb:YAG microdisk laser achieves a single-mode laser output (with a side-mode-suppression ratio of 27.8 dB) under a 946 nm laser pumping. The maximum slope efficiency reaches 27% with a maximum output power of 1.1 mW.

© 2023 Optica Publishing Group

Heterogeneous integration of an on-chip Nd:YAG whispering gallery mode laser with a lithium-niobate-on-insulator platform

Huiqi Li, Zhaocong Wang, Qingming Lu, Lei wang, Yang Tan, and Feng Chen
Opt. Lett. 49(6) 1397-1400 (2024)

Microbubble-probe WGM resonators enable displacement measurements with high spatial resolution

Bonan Liu, Shen Liu, Qiang Zhang, Guiqing Hong, Changrui Liao, Xizhen Xu, Liwei Liu, Junle Qu, and Yiping Wang
Opt. Lett. 48(7) 1922-1925 (2023)

Erbium-ytterbium codoped thin-film lithium niobate integrated waveguide amplifier with a 27 dB internal net gain

Zhihao Zhang, Shanming Li, Renhong Gao, Haisu Zhang, Jintian Lin, Zhiwei Fang, Rongbo Wu, Min Wang, Zhenhua Wang, Yin Hang, and Ya Cheng
Opt. Lett. 48(16) 4344-4347 (2023)

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)

Efficient passively Q switched lasers with a large-energy stored Yb:LuScO₃ crystal

Yu Fu, Ruiqi Guo, Haohai Yu, and Huaijin Zhang
Opt. Lett. 48(2) 295-298 (2023)