Expermi ental study of reflectivity measurement of single wavelength by cavity ring-down method

YI Heng-yu; PENG Yong; TIAN Xiao-qiang; HU Xiao-yang; L&#220; Bai-da

Approximate condition of reflectivity measurement with cavity ring-down method is analyzed,misadjustment characteristic of confocal cavity is discussed and influence of cavity mirror's reflectivity on ring-down signal is calculated.In order to lessen metrical precision from diffraction losses of OPO laser,based on the above analyses,a reflectivity measuring system for single wavelength is set up with cavity ring-down method,whose ring-down cavity is confocal cavity.Experimental measurement of reflectivity of cavity mirror and inserted mirror is carried out.The measurement RMS in linear cavity is less than 6×10-6.Results show that cavity ring-down method is only for higher reflectivity,and metrical precision can be improved by using logarithm transform of oscillograph in adjustment of the optical cavity.

1. Institute of Laser Physics & Chemistry, Sichuan University, Chengdu 610064, China;

2. Institute of Applied Electronic, CAEP, Mianyang 621900, China

Received Date: 2004-07-05

Accepted Date: 2004-10-25

Available Online: 2005-07-25

Abstract: Approximate condition of reflectivity measurement with cavity ring-down method is analyzed,misadjustment characteristic of confocal cavity is discussed and influence of cavity mirror's reflectivity on ring-down signal is calculated.In order to lessen metrical precision from diffraction losses of OPO laser,based on the above analyses,a reflectivity measuring system for single wavelength is set up with cavity ring-down method,whose ring-down cavity is confocal cavity.Experimental measurement of reflectivity of cavity mirror and inserted mirror is carried out.The measurement RMS in linear cavity is less than 6×10-6.Results show that cavity ring-down method is only for higher reflectivity,and metrical precision can be improved by using logarithm transform of oscillograph in adjustment of the optical cavity.

HTML

Reference (8)

[1]	孙福革,孙龙,戴东旭.用光腔衰荡光谱方法精确测量高反镜的反射率 [J].中国激光,1999,A26(1):35～38.
[2]	盛新志,房本杰,孙福革.复合衰荡光腔技术精确检测COIL腔镜高反射率 [J].强激光与粒子束,1998,10(2):199～202.
[3]	赵宏太,柳晓军,詹明生.腔衰荡法四腔镜反射率及腔内吸收测量 [J].量子电子学报,2001,18(3):213～216.
[4]	赵宏太,柳晓军,王谨 et al.用光腔衰荡测定腔镜及镜片的反射率 [J].光电子 · 激光,2001,12(1):71～73.
[5]	ANDERSON D Z,FRISCH J C,MASSER C S.Mirror reflector based on optical cavity decay time [J].Appl Opt,1984,23(8):1238～1242.
[6]	SANDERSON R L,STEIFER W.Laser resonator with tilted reflectors [J].Appl Opt,1969,8(11):2241～2248.
[7]	易亨瑜,吕百达,胡晓阳.腔长失调对光腔衰荡光谱法测量精度的影响 [J].强激光与粒子束,2004,16(8):547～551.
[8]	易亨瑜,胡晓阳,彭勇 et al.探测器孔径大小对衰荡腔测量精度的影响 [J].激光技术,2004,28(3):231～236.

[1]	孙福革,孙龙,戴东旭.用光腔衰荡光谱方法精确测量高反镜的反射率 [J].中国激光,1999,A26(1):35～38.
[2]	盛新志,房本杰,孙福革.复合衰荡光腔技术精确检测COIL腔镜高反射率 [J].强激光与粒子束,1998,10(2):199～202.
[3]	赵宏太,柳晓军,詹明生.腔衰荡法四腔镜反射率及腔内吸收测量 [J].量子电子学报,2001,18(3):213～216.
[4]	赵宏太,柳晓军,王谨 et al.用光腔衰荡测定腔镜及镜片的反射率 [J].光电子 · 激光,2001,12(1):71～73.
[5]	ANDERSON D Z,FRISCH J C,MASSER C S.Mirror reflector based on optical cavity decay time [J].Appl Opt,1984,23(8):1238～1242.
[6]	SANDERSON R L,STEIFER W.Laser resonator with tilted reflectors [J].Appl Opt,1969,8(11):2241～2248.
[7]	易亨瑜,吕百达,胡晓阳.腔长失调对光腔衰荡光谱法测量精度的影响 [J].强激光与粒子束,2004,16(8):547～551.
[8]	易亨瑜,胡晓阳,彭勇 et al.探测器孔径大小对衰荡腔测量精度的影响 [J].激光技术,2004,28(3):231～236.

Expermi ental study of reflectivity measurement of single wavelength by cavity ring-down method

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Proportional views