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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 34, Iss. 19 — Oct. 1, 2009
  • pp: 2912–2914

Shot-noise-limited laser power stabilization with a high-power photodiode array

Patrick Kwee, Benno Willke, and Karsten Danzmann  »View Author Affiliations

Optics Letters, Vol. 34, Issue 19, pp. 2912-2914 (2009)

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The output power of a cw Nd:YAG laser was stabilized in a dc-coupled feedback loop with a low-noise multiphotodiode detector and an electro-optic amplitude modulator in the frequency band from 1 Hz to 1 kHz. For the first time, to our knowledge, an independently measured relative power noise of 2.4 × 10 9 Hz 1 / 2 at 10 Hz was achieved, fulfilling the power stability requirements of the Advanced LIGO (Laser Interferometer Gravitational-Wave Observatory) gravitational wave detector.

© 2009 Optical Society of America

OCIS Codes
(040.5160) Detectors : Photodetectors
(140.3425) Lasers and laser optics : Laser stabilization

ToC Category:

Original Manuscript: June 19, 2009
Revised Manuscript: August 8, 2009
Manuscript Accepted: August 13, 2009
Published: September 18, 2009

Patrick Kwee, Benno Willke, and Karsten Danzmann, "Shot-noise-limited laser power stabilization with a high-power photodiode array," Opt. Lett. 34, 2912-2914 (2009)

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