Diamond Brillouin laser in the visible

Zhenxu Bai*, Robert J. Williams, Ondrej Kitzler, Soumya Sarang, David J. Spence, Yulei Wang, Zhiwei Lu, Richard P. Mildren

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

47 Citations (Scopus)
64 Downloads (Pure)


Brillouin lasers providing extremely narrow-linewidth are emerging as a powerful tool for microwave photonics, coherent communications, quantum processors, and spectroscopy. So far, laser performance and applications have been investigated for a handful of select materials and using guided-wave structures such as micro-resonators, optical fibers, and chip-based waveguides. Here, we report a Brillouin laser based on free-space laser action in an extreme optical material. Continuous-wave lasing 167 GHz from a 532 nm pump is demonstrated in diamond using a doubly resonant ring cavity, generating a pump-limited output power of 11 W. The Brillouin gain coefficient is measured to be 79 cm GW-1 with a linewidth of 12 MHz. These properties, along with an exceptionally high Brillouin frequency and wide transmission range, make diamond Brillouin lasers a promising high-power source of narrow-linewidth output and mm-wave beat notes.

Original languageEnglish
Article number031301
Pages (from-to)1-5
Number of pages5
JournalAPL photonics
Issue number3
Publication statusPublished - 1 Mar 2020

Bibliographical note

Copyright 2020 Author(s). Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.


Dive into the research topics of 'Diamond Brillouin laser in the visible'. Together they form a unique fingerprint.

Cite this