摘要
根据光腔衰荡光谱技术原理,建立了测量镜片反射率的实验装置。利用该装置测定了一对反射率相等的高反射腔镜,反射率测试结果为(99.925±0.001)%;以22.5°将直腔变为折叠腔,测得的反射率为(99.992±0.003)%。重复测定反射镜样品的反射率,精度达到10-5。该测量装置可用于超低损耗薄膜高反射镜反射率的精确测量。轻微移动探测器位置,对腔镜的测试结果影响不大。
This paper presents the experimental method to measure the high reflectivity of optical mirror by cavity ring-down spectroscopy. The experimental system uses a straight cavity composed of a pair of cavity mirrors with the same reflectivity or a folded cavity which is formed from the straight cavity to be folded at 22.5° angle, a reflector is laid at folded point. The reflectivity of the cavity mirrors is measured to be (99.925±0.001)% and the reflector to be (99.992±0.003)%. The metrical precision achieves 10-5. The low loss and high reflectivity mirrors can be measured accurately by this setup.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2005年第3期335-338,共4页
High Power Laser and Particle Beams
基金
国家863计划项目资助课题
