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Published December 30, 2019 | Published
Book Section - Chapter Open

Mid-IR laser for wavefront correction in gravitational wave detectors


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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© 2019 Society of Photo-Optical Instrumentation Engineers (SPIE).

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