A study for reduction of radiation pressure noise in gravitational wave detectors

Document #:

LIGO-P070133-x0

Document type:

P - Publications

Abstract:

We describe an experimental conceptual design for observation and reduction of radiation pressure noise. The radiation pressure noise is increased in a high finesse cavity with a small mass mirror. In our experiment a Fabry-Perot Michelson interferometer with a homodyne detection scheme will be built with Fabry-Perot cavities of finesse of 10000 containing suspended mirrors of 23 mg. To observe the radiation pressure noise, the goal sensitivity is set to 1×10-17 [m/ √Hz] at 1 kHz. Then the radiation pressure noise is reduced by adjusting the homodyne phase. To achieve the sensitivity, the other noise sources such as thermal noises, seismic noise and laser frequency noise should be suppressed below 1×10-18 [m/√ Hz] at 1kHz. The whole interferometer is suspended as a double pendulum on double-layer stacks. As a preliminary setup, a Fabry-Perot cavity of finesse of 800 with a suspended mirror of 100 mg was locked. The current best sensitivity is 1×10-15 [m/ √Hz] at 1 kHz.

Files in Document:

• P070133-00.pdf (1.6 MB)

Other Files:

• P070133-P.pdf (1.8 MB)

Topics:

• Public relations
• Document Migration from the old DCC

Authors:

• Shihori Sakata
• Kenji Numata
• Seiji Kawamura
• Osamu Miyakawa
• Atsushi Nishizawa
• Shuichi Sato
• Volker Leonhardt
• Toshitaka Yamazaki
• Mitsuhiro Fukushima
• Akira Furusawa
• Akio Sugamoto

Notes and Changes:

Rev P070133-00-Z:
- Full document number: LIGO-P070133-00-Z
- Author(s): Shihori Sakata; Volker Leonhardt; Seiji Kawamura; Kenji Numata; Osamu Miyakawa; Shuichi Sato; Atsushi Nishizawa; Toshitaka Yamazaki; Mitsuhiro Fukushima; Akira Furusawa; Akio Sugamoto
- Document date: 2007-11-01
- Document received date: 2007-11-01
- Document entry date: 2007-11-01

Publication Information:

http://www.iop.org/EJ/abstract/1742-6596/122/1/012020