Sensitivity of intracavity filtering schemes for detecting gravitational waves
Abstract
We consider enhancing the sensitivity of future gravitational-wave detectors by adding optical filters inside the signal-recycling cavity—an intracavity filtering scheme, which coherently feeds the sideband signal back to the interferometer with a proper frequency-dependent phase. We study three cases of such a scheme with different motivations: (i) the case of backaction noise evasion, trying to cancel radiation-pressure noise with only one filter cavity for a signal-recycled interferometer; (ii) the speed-meter case, similar to the speed-meter scheme proposed by Purdue and Chen [Phys. Rev. D 66, 122004 (2002)] but without the resonant-sideband-extraction mirror, and also relieves the optical requirement on the sloshing mirror; (iii) the broadband detection case with squeezed-light input, numerically optimized for a broadband sensitivity.
Additional Information
© 2014 American Physical Society. Received 11 October 2013; published 31 March 2014. We would like to thank Farid Khalili, Stefan Danilishin, Sergey Vyatchanin and members in the LIGO-MQM discussion group for discussions. We also thank Rana Adhikari, Matthew Evans, Stefan Ballmer and members in the AIC working group for fruitful discussions. We thank Frank Brückner for comments. M.W. and A. F. have been supported by the Science and Technology Facilities Council (STFC). H. M. and Y. C. are supported by the National Science Foundation (NSF) Grants No. PHY-0555406, No. PHY-0956189, No. PHY-1068881, as well as the David and Barbara Groce startup fund at Caltech, and the Institute for Quantum Information and Matter, a Physics Frontier Center with funding from the NSF and the Gordon and Betty Moore Foundation.Attached Files
Published - PhysRevD.89.062009.pdf
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Additional details
- Eprint ID
- 46127
- Resolver ID
- CaltechAUTHORS:20140606-115102848
- Science and Technology Facilities Council (STFC)
- NSF
- PHY- 0555406
- NSF
- PHY-0956189
- NSF
- PHY-1068881
- David and Barbara Groce startup fund
- Institute for Quantum Information and Matter (IQIM)
- Gordon and Betty Moore Foundation
- Created
-
2014-06-17Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field
- Caltech groups
- Institute for Quantum Information and Matter