LIGO Document G1000869-v1

Demonstration of a squeezed zero-area Sagnac interferometer for future gravitational wave detectors

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LIGO-G1000869-v1
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G - Presentations (eg Graphics)
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Abstract:
In this talk we present the experimental demonstration of a table-top zero-area Sagnac interferometer at 1064nm whose sensitivity was increased by 8.2 dB with squeezed light. Measurements performed directly on our squeezed-light laser output revealed squeezing of 12.7 dB. The sensitivity of a squeezed-light enhanced Sagnac interferometer can surpass the standard quantum limit for a broad spectrum of signal frequencies without the need for filter cavities as required for Michelson interferometers. The Sagnac topology is therefore a powerful option for future gravitational-wave detectors.
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Sagnac squeezing

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