Cavity ring-down technique for measurement of reflectivity of high reflectivity mirrors with high accuracy

被引：10
|
作者：
Sridhar, G. [1 ]
Agarwalla, Sandeep K. [1 ]
Singh, Sunita [1 ]
Gantayet, L. M. [1 ]
机构：
[1] Bhabha Atom Res Ctr, Div Laser & Plasma Technol, Bombay 400085, Maharashtra, India
来源：
PRAMANA-JOURNAL OF PHYSICS | 2010年 / 75卷 / 06期
关键词：
Cavity ring-down method; reflectivity measurement; optical resonator; SPECTROSCOPY;
D O I：
10.1007/s12043-010-0211-8
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A simple, accurate and reliable method for measuring the reflectivity of laser-grade mirrors (R > 99.5%) based on cavity ring-down (CRD) technique has been successfully demonstrated in our laboratory using a pulsed Nd:YAG laser. A fast photomultiplier tube with an oscilloscope was used to detect and analyse the CRD signal. The cavity decay times were measured for three cavities formed by a combination of three mirror pairs. The absolute reflectivities R(1), R(2) R(3) were determined to be 99.94%, 99.63%, 99.52% at normal incidence. The reflectivity of mirrors is measured to an accuracy of 0.01%.
引用
收藏
页码：1233 / 1239
页数：7
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