Abstract

Interferometric detection of gravitational waves at a level of astrophysical interest is expected to require measurement of optical phase differences of 10-10 rad. A fundamental limit to the phase sensing is the statistics of photon detection—Poisson statistics for light in a coherent state. We have built a laboratory-scale interferometer to achieve and investigate the phase detection sensitivity required for the Laser Interferometer Gravitational-Wave Observatory. With 70 W of circulating power, we have obtained a phase sensitivity of 1.28×10-10 rad/Hz at frequencies above 600 Hz, limited by quantum noise. Below 600 Hz, excess noise above the quantum limit is seen, and we present our investigations into the sources of this excess. Compared with the results of previous such experiments, the phase sensitivity over the full 100-Hz–10-kHz band of interest has been improved by factors of up to 100, with a factor-of-2.5 improvement in the quantum-limited level.

© 2002 Optical Society of America

Full Article  |  PDF Article
Related Articles
Signal extraction in a power-recycled Michelson interferometer with Fabry–Perot arm cavities by use of a multiple-carrier frontal modulation scheme

Daniel Sigg, Nergis Mavalvala, Joseph Giaime, Peter Fritschel, and David Shoemaker
Appl. Opt. 37(24) 5687-5693 (1998)

Alignment of an interferometric gravitational wave detector

Peter Fritschel, Nergis Mavalvala, David Shoemaker, Daniel Sigg, Michael Zucker, and Gabriela González
Appl. Opt. 37(28) 6734-6747 (1998)

High-gain power recycling of a Fabry–Perot Michelson interferometer for a gravitational-wave antenna

Shuichi Sato, Masatake Ohashi, Masa-Katsu Fujimoto, Mitsuhiro Fukushima, Koichi Waseda, Shinji Miyoki, Nergis Mavalvala, and Hiroaki Yamamoto
Appl. Opt. 39(25) 4616-4620 (2000)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (8)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (16)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription