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Laser coherence measurement based on optical pulses interference
WANG Zhihao 1,LI Zhengyong 2 * #,LIU Lanlan 2,WU Chongqing 2
1.Key Laboratory of Luminescence and Optical Information of Ministry of Education and Institute of Optical Information, Beijing Jiaotong University, Beijing 100044
2.Key Laboratory of Luminescence and Optical Information of Ministry of Education and Institute of Optical Information, Beijing Jiaotong University, Beijing 100044, China
*Correspondence author
#Submitted by
Subject:
Funding: the Beijing Natural Science Foundation (No.No. 4112042), the Specialized Research Fund for the Doctoral Program of Higher Education of Ministry of Education (No.No. 20090009120035), the National Natural Science Foundation of China (No.Nos. 60907027 and 61077048)
Opened online:18 September 2012
Accepted by: none
Citation: WANG Zhihao,LI Zhengyong,LIU Lanlan.Laser coherence measurement based on optical pulses interference[OL]. [18 September 2012] http://en.paper.edu.cn/en_releasepaper/content/4489214
 
 
By using a feedback-stabilized fiber Mach-Zehnder interferometer (MZI) with a PZT-based phase shifter, a novel method for measurement of laser coherence length is demonstrated based on pulses interference. Experimental results show that the coherence length is closed to that measured by the commercial optical spectrometer, and the partial coherence phenomenon is observed. Our scheme can measure not only the high-coherence laser but also low-coherence pulses, which will be widely used in coherent laser measurement and application.
Keywords:Optics; coherence; interference; pulse
 
 
 

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