Chua SSY, Stefszky MS, Mow-Lowry CM, Buchler BC, Dwyer S, Shaddock DA, Lam PK, McClelland DE. Backscatter tolerant squeezed light source for advanced gravitational-wave detectors.
OPTICS LETTERS 2011;
36:4680-4682. [PMID:
22139282 DOI:
10.1364/ol.36.004680]
[Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
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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