Backscatter tolerant squeezed light source for advanced gravitational-wave detectors |
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| Authors: | Chua Sheon S Y Stefszky Michael S Mow-Lowry Conor M Buchler Ben C Dwyer Sheila Shaddock Daniel A Lam Ping Koy McClelland David E |
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| Institution: | Department of Quantum Science, Research School of Physics and Engineering, Australian National University, Acton, Australian Capital Territory 0200, Australia. sheon.chua@anu.edu.au |
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| Abstract: | We report on the performance of a dual-wavelength resonant, traveling-wave optical parametric oscillator to generate squeezed light for application in advanced gravitational-wave interferometers. Shot noise suppression of 8.6±0.8 dB was measured across the detection band of interest to Advanced LIGO, and controlled squeezing measured over 5900 s. Our results also demonstrate that the traveling-wave design has excellent intracavity backscattered light suppression of 47 dB and incident backscattered light suppression of 41 dB, which is a crucial design issue for application in advanced interferometers. |
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