Dual-microcavity narrow-linewidth Brillouin laser

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Ultralow-noise yet tunable lasers are a revolutionary tool in precision spectroscopy, displacement measurements at the standard quantum limit, and the development of advanced optical atomic clocks. Further applications include lidar, coherent communications, frequency synthesis, and precision sensors of strain, motion, and temperature. While all applications benefit from lower frequency noise, many also require a laser that is robust and compact. Here, we introduce a dual-microcavity laser that leverages one chip-integrable silica microresonator to generate tunable 1550 nm laser light via stimulated Brillouin scattering (SBS) and a second microresonator for frequency stabilization of the SBS light. This configuration reduces the fractional frequency noise to 7.8 x 10(-14) 1/root Hz at 10 Hz offset, which is a new regime of noise performance for a microresonator-based laser. Our system also features terahertz tunability and the potential for chip-level integration. We demonstrate the utility of our dual-microcavity laser by performing spectral linewidth measurements with hertz-level resolution. (C) 2015 Optical Society of America.
Publisher
OPTICAL SOC AMER
Issue Date
2015-03
Language
English
Article Type
Article
Keywords

GALLERY-MODE RESONATORS; FREQUENCY STABILIZATION; SEMICONDUCTOR-LASER; OPTICAL CAVITY; SILICON; CHIP; MICRORESONATOR; GENERATION; REFERENCES; DIVISION

Citation

OPTICA, v.2, no.3, pp.225 - 232

ISSN
2334-2536
DOI
10.1364/OPTICA.2.000225
URI
http://hdl.handle.net/10203/198970
Appears in Collection
NT-Journal Papers(저널논문)
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