| 光腔衰荡法测量高反射率的实验研究 |
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| 引用本文： | 刘蓉,李锋,白晋涛.光腔衰荡法测量高反射率的实验研究[J].光学与光电技术,2008,6(1):11-14. |
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| 作者姓名： | 刘蓉 李锋 白晋涛 |
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| 作者单位： | 1. 西安工业大学光电工程学院,陕西,西安,710032;西北大学光子学与光子技术研究所,陕西,西安,710069
2. 西北大学光子学与光子技术研究所,陕西,西安,710069 |
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| 基金项目： | 陕西省教育厅资助项目
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陕西省教育厅资助项目 |
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| 摘 要： | 基于光腔衰荡光谱技术，建立了以共焦腔为衰荡腔的单波长反射率测量装置，该装置可用于精密测量全固体激光器高反射率腔镜的反射率，检测得到了高反腔镜在946nm的反射率。实验测得平凹镜和平面镜衰荡时间的平均值分别为1．624μs和821ns，平凹镜的反射率为99．794％，相对误差精确到10^-5；平面反射镜的反射率为99．800％，相对误差精确到10^-4。结果表明，光腔衰荡法可用于高反射率腔镜反射率的测量，与分光光度计测得的结果相比，具有非常高的测量精度。
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| 关 键 词： | 光腔衰荡光谱技术 高反射率 测量 共焦腔 |
| 文章编号： | 1672-3392（2008）01-0011-04 |
| 收稿时间： | 2007-07-20 |
| 修稿时间： | 2007-10-09 |
High Reflectivity Measurement by Cavity Ring-Down Spectroscopy |
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| LIU Rong,LI Feng,BAI Jin-tao.High Reflectivity Measurement by Cavity Ring-Down Spectroscopy[J].optics&optoelectronic technology,2008,6(1):11-14. |
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| Authors: | LIU Rong LI Feng BAI Jin-tao |
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| Institution: | LIU Rong College of Photo-Electric Engineering,Xi\'an Technological University,Xi\'an 710032,China LI Feng BAI Jin-tao Northwest University,Institute of Photonics & Photon-Technology,Xi\'an 710069,Chian |
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| Abstract: | Based on cavity ring-down spectroscope technology, a single wavelength reflectivity measuring system whose ringdown cavity is confocal cavity is set up. It can accurately determine the reflectivity of a mirror at the wavelength of 946 nm.The average value of ring-down times are 1.624 μs and 821 ns respectively. The reflectivity of the concave cavity mirrors is to be 99.794%, relative error achieves to 10－6 , and that of the flat mirror is to be 99.800%, relative error achieves to 10－4. The experiment results show that cavity ring-down method can be used in the higher reflectivity experiment, and the metrical precision is higher than the result of spectrophotometer. |
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| Keywords: | cavity ring-down spectroscope(CRDS) high reflectivity measurement confocal cavity |
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