Observation of an Optical Spring in a Robustly Controlled Signal-Recycled Michelson Interferometer
arXiv:2504.18374 · doi:10.1364/OE.574126
Abstract
We present, to the best of our knowledge, the first demonstration of an optical spring in a signal-recycled Michelson interferometer without arm cavities. The setup utilizes multiple laser fields to achieve stable and precisely controllable detuning and incorporates a compliant suspension system comprising two double-spiral springs. These results support optical spring-enhanced interferometers with intracavity amplification, offering a promising avenue for improving high-frequency sensitivity in future gravitational-wave detectors.
arXiv comment14 pages, 8 figures
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