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Brillouin backaction thermometry for modal temperature control

Lai, Yu-Hung and Yuan, Zhiquan and Suh, Myoung-Gyun and Lu, Yu-Kun and Wang, Heming and Vahala, Kerry J. (2022) Brillouin backaction thermometry for modal temperature control. Optica, 9 (7). pp. 701-705. ISSN 2334-2536. doi:10.1364/OPTICA.459082.

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Stimulated Brillouin scattering provides optical gain for efficient and narrow-linewidth lasers in high-Q microresonator systems. However, the thermal dependence of the Brillouin process as well as the microresonator frequencies impose strict temperature control requirements for long term frequency-stable operation. Here, we study Brillouin backaction and use it to both measure and phase-sensitively lock modal temperature to a reference temperature defined by the Brillouin phase matching condition. At a specific lasing wavelength, the reference temperature can be precisely set by adjusting the resonator’s free spectral range. This backaction control method is demonstrated in a chip-based Brillouin laser, but can be applied in all Brillouin laser platforms. It offers a new approach for frequency-stable operation of Brillouin lasers in atomic clock, frequency metrology, and gyroscope applications.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Lai, Yu-Hung0000-0002-9639-6569
Suh, Myoung-Gyun0000-0002-9527-0585
Lu, Yu-Kun0000-0003-4840-0487
Wang, Heming0000-0003-3861-0624
Vahala, Kerry J.0000-0003-1783-1380
Additional Information:© 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement. Received 21 March 2022; revised 31 May 2022; accepted 1 June 2022; published 24 June 2022. Yu-Kun Lu thanks the Caltech SURF program for financial support. Funding: Defense Advanced Research Projects Agency (N66001-16-1-4046); Air Force Office of Scientific Research (FA9550-18-1-0353); Kavli Nanoscience Institute. The authors declare no conflicts of interest. Data availability: Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.
Group:Kavli Nanoscience Institute
Funding AgencyGrant Number
Caltech Summer Undergraduate Research Fellowship (SURF)UNSPECIFIED
Office of Naval Research (ONR)N66001-16-1-4046
Air Force Office of Scientific Research (AFOSR)FA9550-18-1-0353
Defense Advanced Research Projects Agency (DARPA)UNSPECIFIED
Kavli Nanoscience InstituteUNSPECIFIED
Issue or Number:7
Record Number:CaltechAUTHORS:20220707-204109957
Persistent URL:
Official Citation:Yu-Hung Lai, Zhiquan Yuan, Myoung-Gyun Suh, Yu-Kun Lu, Heming Wang, and Kerry J. Vahala, "Brillouin backaction thermometry for modal temperature control," Optica 9, 701-705 (2022); DOI: 10.1364/OPTICA.459082
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:115406
Deposited By: George Porter
Deposited On:08 Jul 2022 22:17
Last Modified:27 Jul 2022 19:59

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