包含微悬臂梁镜的稳定、模式匹配、中等精细度光学腔：光学特性与激光冷却

Stable, mode-matched, medium-finesse optical cavity incorporating a microcantilever mirror: optical characterization and laser cooling.

作者信息

Harris J G E, Zwickl B M, Jayich A M

机构信息

Department of Physics, Yale University, P.O. Box 208284, New Haven, Connecticut 06520, USA.

出版信息

Rev Sci Instrum. 2007 Jan;78(1):013107. doi: 10.1063/1.2405373.

DOI:10.1063/1.2405373

PMID:17503907

Abstract

A stable optical resonator has been built using a 30-microm-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.

摘要

利用一个30微米宽、镀有金属的微悬臂作为一个反射镜，构建了一个稳定的光学谐振器。第二个反射镜是一个直径为12.7毫米的凹面介质镜。通过将两个反射镜以近半球形配置放置在相距75毫米的位置，实现了一个精细度等于55的法布里-珀罗腔。精细度受悬臂金属涂层中的光学损耗限制；小反射镜的衍射损耗可忽略不计。该腔实现了对悬臂布朗运动的被动激光冷却。