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

Document #:

LIGO-P070067-x0

Document type:

P - Publications

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.

Files in Document:

• P070067-P.pdf (405.2 kB)

Other Files:

• P070067-00.pdf (95.5 kB)
• P070067-A.pdf (135.6 kB)

Topics:

• Public relations
• Document Migration from the old DCC

Authors:

• Stefan Hild
• Andreas Freise

Notes and Changes:

Rev P070067-P-Z:
- Full document number: LIGO-P070067-P-Z
- Author(s): S. Hild; A. Freise
- Document date: 2007-10-24
- Document received date: 2008-09-25
- Document entry date: 2008-09-25
- Citation reference: Class. Quantum Grav. 24 (2007) 5453 - 5460 doi:10.1088/0264-9381/24/22/010

Rev P070067-A-Z:
- Full document number: LIGO-P070067-A-Z
- Author(s): S. Hild; A. Freise
- Document date: 2007-09-10
- Document received date: 2007-11-06
- Document entry date: 2007-11-06

Rev P070067-00-Z:
- Full document number: LIGO-P070067-00-Z
- Author(s): A. Freise; S. Hild
- Document date: 2007-05-29
- Document received date: 2007-05-29
- Document entry date: 2007-05-29

Journal References:

Published in Class Quant Grav vol. 24 pg. 5453-5460.

Publication Information:

http://www.iop.org/EJ/abstract/0264-9381/24/22/010