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Stable, mode-matched, medium-finesse optical cavity incorporating a microcantilever mirror

2006/05/16 by J. G. E. Harris, Jack Harris, B. M. Zwickl +6
Engineering · Physics and Astronomy · #Advanced Fiber Laser Technologies #FOS: Physical sciences #Instrumentation and Detectors (physics.ins-det) #Mechanical and Optical Resonators #Optics (physics.optics) #Photonic and Optical Devices #physics.ins-det #physics.optics

paper · pdf · doi:10.48550/arxiv.physics/0605141

11 pages, 4 figures

arxiv created 2006/05/16 · openalex publication_date 2006/05/16 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

A stable optical resonator has been built using a 30 micrometer-wide, metal-coated microcantilever as one mirror. The second mirror was a 12.7 mm-diameter concave dielectric mirror. By positioning the two mirrors 75 mm apart in a near-hemispherical configuration, a Fabry-Perot cavity with a finesse equal to 55 was achieved. The finesse was limited by the optical loss in the cantilever's metal coating; diffraction losses from the small mirror were negligible. The cavity achieved passive laser cooling of the cantilever's Brownian motion.

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