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Optics Letters

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  • Vol. 36, Iss. 18 — Sep. 15, 2011
  • pp: 3563–3565

Laser power noise detection at the quantum-noise limit of 32 A photocurrent

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


Optics Letters, Vol. 36, Issue 18, pp. 3563-3565 (2011)
http://dx.doi.org/10.1364/OL.36.003563


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Abstract

The power noise of a cw Nd:YAG laser system was measured at radio frequencies using the optical ac coupling technique. An additional mode cleaner in the setup allowed a high optical ac coupling amplification of 62.3. For the first time, to our knowledge, a sensitivity of 1.1 × 10 10 Hz 1 / 2 relative power noise was achieved corresponding to an equivalent detected photocurrent of 32 A . High precision optics experiments can utilize this scheme to improve the sensitivity of their photodetectors.

© 2011 Optical Society of America

OCIS Codes
(040.5160) Detectors : Photodetectors
(230.5750) Optical devices : Resonators

ToC Category:
Detectors

History
Original Manuscript: July 15, 2011
Manuscript Accepted: August 8, 2011
Published: September 8, 2011

Citation
Patrick Kwee, Benno Willke, and Karsten Danzmann, "Laser power noise detection at the quantum-noise limit of 32 A photocurrent," Opt. Lett. 36, 3563-3565 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-18-3563

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