Mid-IR laser for wavefront correction in gravitational wave detectors

Deeksha Beniwal; Huy T. Cao; Sebastian Ng; Aidan F. Brooks; Gayathri Bharathan; Alex Fuerbach; Peter J. Veitch; David J. Ottaway

doi:10.1117/12.2540061

30 December 2019 Mid-IR laser for wavefront correction in gravitational wave detectors

Deeksha Beniwal, Huy T. Cao, Sebastian Ng, Aidan F. Brooks, Gayathri Bharathan, Alex Fuerbach, Peter J. Veitch, David J. Ottaway

Author Affiliations +

Proceedings Volume 11200, AOS Australian Conference on Optical Fibre Technology (ACOFT) and Australian Conference on Optics, Lasers, and Spectroscopy (ACOLS) 2019; 112002C (2019) https://doi.org/10.1117/12.2540061
Event: ANZCOP, 2019, Melbourne, Australia

Abstract

The next-generation gravitational wave detectors aim to enhance our understanding of extreme phenomena in the Universe. The high-frequency sensitivity of these detectors will be maximized by injecting squeezed vacuum states into the detector. However, the performance advantages offered by squeezed state injection can be easily degraded by losses in the system. A significant source of loss is the mode mismatch between optical cavities within the interferometer. To overcome this issue, new actuators are required that can produce a highly spherical wavefront change, with minimal higher order aberrations, whist adding low phase noise to the incident beam.

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Deeksha Beniwal, Huy T. Cao, Sebastian Ng, Aidan F. Brooks, Gayathri Bharathan, Alex Fuerbach, Peter J. Veitch, and David J. Ottaway "Mid-IR laser for wavefront correction in gravitational wave detectors", Proc. SPIE 11200, AOS Australian Conference on Optical Fibre Technology (ACOFT) and Australian Conference on Optics, Lasers, and Spectroscopy (ACOLS) 2019, 112002C (30 December 2019); https://doi.org/10.1117/12.2540061

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