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Pump frequency noise coupling into a microcavity by thermo-optic locking

Li, Jiang and Diddams, Scott and Vahala, Kerry J. (2014) Pump frequency noise coupling into a microcavity by thermo-optic locking. Optics Express, 22 (12). pp. 14559-14567. ISSN 1094-4087. doi:10.1364/OE.22.014559.

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As thermo-optic locking is widely used to establish a stable frequency detuning between an external laser and a high Q microcavity, it is important to understand how this method affects microcavity temperature and frequency fluctuations. A theoretical analysis of the laser-microcavity frequency fluctuations is presented and used to find the spectral dependence of the suppression of laser-microcavity, relative frequency noise caused by thermo-optic locking. The response function is that of a high-pass filter with a bandwidth and low-frequency suppression that increase with input power. The results are verified using an external-cavity diode laser and a silica disk resonator. The locking of relative frequency fluctuations causes temperature fluctuations within the microcavity that transfer pump frequency noise onto the microcavity modes over the thermal locking bandwidth. This transfer is verified experimentally. These results are important to investigations of noise properties in many nonlinear microcavity experiments in which low-frequency, optical-pump frequency noise must be considered.

Item Type:Article
Related URLs:
URLURL TypeDescription DOIArticle
Diddams, Scott0000-0002-2144-0764
Vahala, Kerry J.0000-0003-1783-1380
Additional Information:© 2014 Optical Society of America. Received 10 Apr 2014; revised 30 May 2014; accepted 30 May 2014; published 5 Jun 2014. This work is supported by the DARPA ORCHID and QUASAR programs. The authors are also grateful for the support from the Institute for Quantum Information and Matter, an NSF Physics Frontiers Center with support of the Gordon and Betty Moore Foundation, and the Kavli NanoScience Institute. J.L. acknowledges the support from the Kavli Nanoscience Institute for a postdoctoral fellowship.
Group:Institute for Quantum Information and Matter, Kavli Nanoscience Institute
Funding AgencyGrant Number
Defense Advanced Research Projects Agency (DARPA)UNSPECIFIED
Institute for Quantum Information and Matter (IQIM)UNSPECIFIED
NSF Physics Frontiers CenterUNSPECIFIED
Gordon and Betty Moore FoundationUNSPECIFIED
Kavli NanoScience InstituteUNSPECIFIED
Issue or Number:12
Classification Code:OCIS codes: (140.4780) Optical resonators; (140.6810) Thermal effects; (140.3945) Microcavities; (143.3325) Laser coupling
Record Number:CaltechAUTHORS:20140731-135551283
Persistent URL:
Official Citation:J. Li, S. Diddams, and K. Vahala, "Pump frequency noise coupling into a microcavity by thermo-optic locking," Opt. Express 22, 14559-14567 (2014)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:47723
Deposited By: Tony Diaz
Deposited On:31 Jul 2014 21:08
Last Modified:10 Nov 2021 17:49

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