Abstract

We realize a chip-based Brillouin microlaser with remarkable features of high power and low noise using a microtoroid resonator. Our Brillouin microlaser is able to output a power of up to 126 mW with a fundamental linewidth down to 245 mHz. Additionally, in the course of Brillouin lasing we observe an intriguing power saturation-like effect, which can be attributed to complex thermo-optic-effect-induced mode mismatch between the pump and Brillouin modes. To have a quantitative understanding of this phenomenon, we develop a model by simultaneously considering Brillouin lasing and the thermo-optic effect occurring in the microcavity. Of importance, our theoretical results match well with experimentally measured data.

© 2022 Optica Publishing Group

Self-pulsations in a microcavity Brillouin laser

Yingchun Qin, Shulin Ding, Shujian Lei, Jie Liu, Yan Bai, Menghua Zhang, Yuhang Li, Jianming Wen, Xiaoshun Jiang, and Min Xiao
Opt. Lett. 47(2) 421-424 (2022)

Low-noise Brillouin laser on a chip at 1064  nm

Jiang Li, Hansuek Lee, and Kerry J. Vahala
Opt. Lett. 39(2) 287-290 (2014)

Single-frequency fiber Fabry–Perot Brillouin laser

Shinya Kato and Takao Aoki
Opt. Lett. 47(19) 5000-5003 (2022)

Fundamental linewidth of an AlN microcavity Raman laser

Kewei Liu, Shunyu Yao, Yulei Ding, Zihao Wang, Yanan Guo, Jianchang Yan, Junxi Wang, Changxi Yang, and Chengying Bao
Opt. Lett. 47(17) 4295-4298 (2022)

Integrated photonic molecule Brillouin laser with a high-power sub-100-mHz fundamental linewidth

Kaikai Liu, Jiawei Wang, Nitesh Chauhan, Mark W. Harrington, Karl D. Nelson, and Daniel J. Blumenthal
Opt. Lett. 49(1) 45-48 (2024)