An Astigmatic Method For Real—Time Measurement Of Laser Beam
In this paper we introduced a new laser beam analyzer system. It is a camera-based beam profiling system with USB 2.0 connectivity, operating under software in Microsoft Windows, which includes Vista. It provides highly accurate measurements of beam profile parameters, including beam diameter, centroid, power and energy. The USB 2.0 interface offers enhancement for ease use and portability. We mainly introduced the measuring system in this instrument which we used a newly measuring method——the astigmatic method. In this measuring system we use a quadrant detector measures the astigmation caused by the deviation of the target to the focus point and error signal which composed of the outputs of the quadrant detector and indicates the amount of the deviation. With reference to the calibrated linear correlation between the deviation and the focus error signal, the deviation or the amplitude of vibration can be obtained. The results show that the measurement precision can be greatly improved.
astigmatic method laser beam CCD Laser beam analysis apparatus
Wen Ji-hua Liang Ping Zhu Yue-hong liu Qiang
Hebei Key Laboratory of Optoelectronic Information and Geo-detection TechnologyShijiazhuang Universi Hebei Key Laboratory of Optoelectronic Information and Geo-detection Technology Shijiazhuang Univers
国际会议
第八届国际测试技术研讨会(8th International Symposium on Test and Measurement)
重庆
英文
1392-1395
2009-08-01（万方平台首次上网日期，不代表论文的发表时间）