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キーワード:
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要旨:
Diffraction gratings have been considered as input couplers for Fabry–Perot
cavities in future gravitational wave detectors. We experimentally demonstrate
the use of a triple-suspended, diffractively coupled cavity and examine
conventional Pound–Drever–Hall length sensing and control techniques to
maintain the required operating condition. Utilizing the diffractively coupled
Fabry–Perot cavity, we investigate the effects associated with translational
grating motion and observe a unique 1/f slope in the magnitude of the
frequency response when monitoring the forward-reflected error signal.
