A Caltech Library Service

Multicolor cavity metrology

Izumi, Kiwamu and Arai, Koji and Barr, Bryan and Betzwieser, Joseph and Brooks, Aidan and Dahl, Katrin and Doravari, Suresh and Driggers, Jennifer C. and Korth, W. Zach and Miao, Haixing and Rollins, Jameson and Vass, Stephen and Yeaton-Massey, David and Adhikari, Rana X. (2012) Multicolor cavity metrology. Journal of the Optical Society of America A, 29 (10). pp. 2092-2103. ISSN 1084-7529. doi:10.1364/JOSAA.29.002092.

PDF - Published Version
See Usage Policy.


Use this Persistent URL to link to this item:


Long-baseline laser interferometers used for gravitational-wave detection have proven to be very complicated to control. In order to have sufficient sensitivity to astrophysical gravitational waves, a set of multiple coupled optical cavities comprising the interferometer must be brought into resonance with the laser field. A set of multi-input, multi-output servos then lock these cavities into place via feedback control. This procedure, known as lock acquisition, has proven to be a vexing problem and has reduced greatly the reliability and duty factor of the past generation of laser interferometers. In this article, we describe a technique for bringing the interferometer from an uncontrolled state into resonance by using harmonically related external fields to provide a deterministic hierarchical control. This technique reduces the effect of the external seismic disturbances by 4 orders of magnitude and promises to greatly enhance the stability and reliability of the current generation of gravitational-wave detectors. The possibility for using multicolor techniques to overcome current quantum and thermal noise limits is also discussed.

Item Type:Article
Related URLs:
URLURL TypeDescription
Izumi, Kiwamu0000-0003-3405-8334
Arai, Koji0000-0001-8916-8915
Korth, W. Zach0000-0003-3527-1348
Miao, Haixing0000-0003-2879-5821
Adhikari, Rana X.0000-0002-5731-5076
Additional Information:© 2012 Optical Society of America. Received May 9, 2012; revised August 2, 2012; accepted August 17, 2012; posted August 17, 2012 (Doc. ID 167857); published September 12, 2012. We gratefully acknowledge illuminating discussions with Bram Slagmolen, Nicolas Smith-Lefebvre, and Peter Fritschel. We also thank the National Science Foundation for support under grant PHY-0555406.
Funding AgencyGrant Number
Issue or Number:10
Classification Code:OCIS codes: 120.3180, 120.2230, 140.3515, 310.6805, 350.1270
Record Number:CaltechAUTHORS:20121109-140606927
Persistent URL:
Official Citation:K. Izumi, K. Arai, B. Barr, J. Betzwieser, A. Brooks, K. Dahl, S. Doravari, J. Driggers, W. Korth, H. Miao, J. Rollins, S. Vass, D. Yeaton-Massey, and R. Adhikari, "Multicolor cavity metrology," J. Opt. Soc. Am. A 29, 2092-2103 (2012).
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:35395
Deposited On:13 Nov 2012 17:58
Last Modified:09 Nov 2021 23:14

Repository Staff Only: item control page