Estimation of losses in a 300 m filter cavity and quantum noise reduction in the KAGRA gravitational-wave detector
arXiv:2004.00210 · doi:10.1103/PhysRevD.93.082004
Abstract
The sensitivity of the gravitational-wave detector KAGRA, presently under construction, will be limited by quantum noise in a large fraction of its spectrum. The most promising technique to increase the detector sensitivity is the injection of squeezed states of light, where the squeezing angle is dynamically rotated by a Fabry-Pérot filter cavity. One of the main issues in the filter cavity design and realization is the optical losses due to the mirror surface imperfections. In this work we present a study of the specifications for the mirrors to be used in a 300 m filter cavity for the KAGRA detector. A prototype of the cavity will be constructed at the National Astronomical Observatory of Japan, inside the infrastructure of the former TAMA interferometer. We also discuss the potential improvement of the KAGRA sensitivity, based on a model of various realistic sources of losses and their influence on the squeezing amplitude.
References in corpus (12)
- Advanced Virgo: a 2nd generation interferometric gravitational wave detector
- Advanced LIGO
- Interferometer design of the KAGRA gravitational wave detector
- Conversion of conventional gravitational-wave interferometers into QND interferometers by modifying their input and/or output optics
- Stable Operation of a 300-m Laser Interferometer with Sufficient Sensitivity to Detect Gravitational-Wave Events within our Galaxy
- Squeezed-input, optical-spring, signal-recycled gravitational-wave detectors
- Realistic Filter Cavities for Advanced Gravitational Wave Detectors
- Experimental characterization of frequency dependent squeezed light
- Audio-band frequency-dependent squeezing
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- Optimal configurations of filter cavity in future gravitational-wave detectors
- Large-angle scattered light measurements for quantum-noise filter cavity design studies
Cited by in corpus (12)
- Frequency-Dependent Squeezing for Advanced LIGO
- Proposal for Gravitational-Wave Detection Beyond the Standard Quantum Limit via EPR Entanglement
- Frequency-Dependent Squeezed Vacuum Source for Broadband Quantum Noise Reduction in Advanced Gravitational-Wave Detectors
- Generation of squeezed vacuum state in the millihertz frequency band
- Prospects for improving the sensitivity of the cryogenic gravitational wave detector KAGRA
- Measurement of optical losses in a high-finesse 300 m filter cavity for broadband quantum noise reduction in gravitational-wave detectors
- Control of a filter cavity with coherent control sidebands
- Improving the stability of frequency dependent squeezing with bichromatic control of filter cavity length, alignment and incident beam pointing
- Optical losses as a function of beam position on the mirrors in a 285-m suspended Fabry-Perot cavity
- Performance of multiple filter-cavity schemes for frequency-dependent squeezing in gravitational-wave detectors
- Application of optomechanical frequency conversion on gravitational wave detection
- Demonstration of length control for a filter cavity with coherent control sidebands