High-power, low-noise Brillouin laser on a silicon chip
Department
Physics
Document Type
Article
Publication Date
4-1-2022
Abstract
We realize a chip-based Brillouin microlaser with remarkable features of high power and lownoise using a microtoroid resonator. Our Brillouin microlaser is able to output a power of up to 126mW 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 matchwell with experimentally measured data.
Journal Title
Optics Letters
Journal ISSN
01469592
Volume
47
Issue
7
First Page
1638
Last Page
1641
Digital Object Identifier (DOI)
10.1364/OL.455369