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  Laser power stabilization using optical ac coupling and its quantum and technical limits

Kwee, P., Willke, B., & Danzmann, K. (2009). Laser power stabilization using optical ac coupling and its quantum and technical limits. Applied Optics, 48(28), 5423-5431. doi:10.1364/AO.48.005423.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-60FB-C Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-50D1-2
Genre: Journal Article

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 Creators:
Kwee, Patrick1, 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 demonstrate an active power stabilization of a Nd:YAG laser employing the optical ac-coupling scheme and derive its fundamental quantum limit. This limit is 3 dB better than the one encountered in traditional power stabilization schemes. In our experiment, the optical ac coupling improved the shot-noise-limited sensitivity of the stabilization photodetector by a factor of 11.2. With an independent photodetector, we measured a relative power stability of 3.7×10−9 Hz−1/2 at frequencies of around 200 kHz. A detailed investigation of the performance limit of our experiment revealed a novel noise source that disturbed the fundamental mode field in the optical resonator. This effect could be of relevance to many precision experiments using optical resonators.

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 Dates: 2009
 Publication Status: Published in print
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 Identifiers: eDoc: 436348
DOI: 10.1364/AO.48.005423
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Title: Applied Optics
Source Genre: Journal
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Pages: - Volume / Issue: 48 (28) Sequence Number: - Start / End Page: 5423 - 5431 Identifier: -