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《Opto-electronic Engineering》 2005-07
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Measurement of pulsed-laser wavelength and direction in real time by grating diffraction method

FU Lin, ZANG Ji-long, WANG Zhi-bin (The key Laboratory of the State Education Ministry on Instrumentation Science & Dynamic Measurement, North University of china, Taiyuan 030051, China)  
In order to measure wide band pulsed-laser wavelength and direction in real time under bad environment, a method for measuring pulsed-laser wavelength and direction with grating diffraction method is proposed. By using laser coherent property, different distance between zero-order spectrum and first-order spectrum of laser with different wavelengths after interference, and different incident directions of light with different zero-order spectral positions, thus the laser wavelength and direction can be obtained by reading spectral position from the detector. An experimental optical path is designed according to the measuring principle. The optical path mainly consists of grating, cylindrical mirror and CCD. Experimental results show that the maximal error for measuring laser wavelength is 6.2nm and the maximal error for measuring incident direction is 0.6°. A real-time measurement with laser wavelength resolution 10nm and incident direction resolution 1° can be realized.
【Fund】: 国家自然科学基金项目(60378019);; 山西省科技攻关项目(20041501ZX)
【CateGory Index】: TN247
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Chinese Journal Full-text Database 3 Hits
1 ZHANG Ji-long,WANG Zhi-bin,LI Xiao,TIAN Er-ming(Key Laboratory of Instrumentation Science & Dynamic Measurement of Ministry of Education,North University of China,Taiyuan 030051,China);A Review of Laser Warning Receivers Based on Spectral Discrimination and Coherent Detection[J];Journal of Test and Measurement Technology;2006-02
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3 JI Feng;CHEN Bing-ruo College of Physics Science and Technology, Wuhan University, Wuhan 430072, CHN;Measurement System Design of Monochromatic Wavelength Based on Si Color Sensor[J];Semiconductor Optoelectronics;2004-02
4 XU Xiao-qiu,QIN Yu-fang,HUANG Jie(College of Manufacturing Science and Engineering,Sichuan University,Chengdu 610065,CHN);Characteristic of Linear CCD Image and Its Applicability of Identify Arithmetic[J];Semiconductor Optoelectronics;2006-02
5 Zhang Pizhuang\ Han Yan (Department of Electronic Information Engineering, North China Institute of Technology, Taiyuan, 030051);ESTIMATION OF SIGNAL-NOISE RATIO BASED ON CORRELATION COEFFICIENTS[J];Acta Armamentarii;2003-01
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