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  Laser power stabilization for second-generation gravitational wave detectors

Seifert, F., Kwee, P., Heurs, M., Willke, B., & Danzmann, K. (2006). Laser power stabilization for second-generation gravitational wave detectors. Optics Letters, 31(13), 2000-2002. doi:10.1364/OL.31.002000.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0013-4D4C-C Version Permalink: https://hdl.handle.net/11858/00-001M-0000-0013-4D4E-8
Genre: Journal Article

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 Creators:
Seifert, Frank1, Author           
Kwee, Patrick1, Author           
Heurs, M.1, Author           
Willke, Benno1, Author           
Danzmann, Karsten1, Author           
Affiliations:
1Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24010              

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 Abstract: We present results on the power stabilization of a Nd:YAG laser in the frequency band from 1 Hz to 100 kHz. High-power, low-noise photodetectors are used in a dc-coupled control loop to achieve relative power fluctuations down to 5×10−9 Hz−1/2 at 10 Hz and 3.5×10−9 Hz−1/2 up to several kHz, which is very close to the shot-noise limit for 80 mA of detected photocurrent on each detector. We investigated and eliminated several noise sources such as ground loops and beam pointing. The achieved stability level is close to the requirements for the Advanced LIGO gravitational wave detector.

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Language(s): eng - English
 Dates: 2006-07-01
 Publication Status: Issued
 Pages: -
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 Identifiers: eDoc: 298224
ISI: 000238494600020
DOI: 10.1364/OL.31.002000
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Title: Optics Letters
  Alternative Title : Opt. Lett.
Source Genre: Journal
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Pages: - Volume / Issue: 31 (13) Sequence Number: - Start / End Page: 2000 - 2002 Identifier: ISSN: 0146-9592