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  A novel concept for increasing the peak sensitivity of LIGO by detuning the arm cavities

Hild, S., & Freise, A. (2007). A novel concept for increasing the peak sensitivity of LIGO by detuning the arm cavities. Classical and Quantum Gravity, 24(22), 5453-5460. doi:10.1088/0264-9381/24/22/010.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-4773-4 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-4775-F
Genre: Journal Article

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 Creators:
Hild, Stefan1, Author              
Freise, Andreas1, 2, Author
Affiliations:
1Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24010              
2AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24009              

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 Abstract: We introduce a concept that uses detuned arm cavities to increase the shot-noise-limited sensitivity of LIGO without increasing the light power inside the arm cavities. Numerical simulations show an increased sensitivity between 125 and 400 Hz, with a maximal improvement of about 80% around 225 Hz, while the sensitivity above 400 Hz is decreased. Furthermore, our concept is found to give a sensitivity similar to that of a conventional RSE configuration with a signal-recycling mirror of moderate reflectivity. In the near future detuned arm cavities might be a beneficial alternative to RSE, due to the potentially less hardware-intensive implementation of the proposed concept.

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 Dates: 2007-11-21
 Publication Status: Published in print
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 Identifiers: eDoc: 334878
ISI: 000251428400010
DOI: 10.1088/0264-9381/24/22/010
Other: arXiv:0709.1488
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Title: Classical and Quantum Gravity
Source Genre: Journal
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Pages: - Volume / Issue: 24 (22) Sequence Number: - Start / End Page: 5453 - 5460 Identifier: ISSN: 0264-9381