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Backscatter tolerant squeezed light source for advanced gravitational-wave detectors

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OPTICS LETTERS
卷 36, 期 23, 页码 4680-4682

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OPTICAL SOC AMER
DOI: 10.1364/OL.36.004680

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  1. Australian Research Council
  2. Division Of Physics
  3. Direct For Mathematical & Physical Scien [0757058] Funding Source: National Science Foundation

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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 back-scattered light suppression of 47 dB and incident backscattered light suppression of 41 dB, which is a crucial design issue for application in advanced interferometers. (C) 2011 Optical Society of America

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