2025/04/25 by Suzuki, Kaido, Harada, Ken-ichi, Iden, Ryo +4
#FOS: Physical sciences #Optics (physics.optics)
paper · doi:10.48550/arxiv.2504.18374
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.