Parameters analysis and measurement of nanosecond diffraction-free Bessel laser pulse

被引：0

作者：

Wu, Feng-Tie ^{[1
]}

Chen, Yun-Bin ^{[1
]}

Guo, Dong-Dong ^{[1
]}

Zhang, Jian-Rong ^{[1
]}

机构：

[1] College of Information Science and Engineering, Huaqiao University, Quanzhou 362021, China

来源：

Zhongguo Jiguang/Chinese Journal of Lasers | 2007年 / 34卷 / 08期

关键词：

Laser beams - Q switched lasers - Scanning;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Relative parameters of nanosecond diffraction-free Bessel laser pulse were theoretically analyzed and measured in experiments. The expressions of the optical intensity distribution behind an axicon illuminated by a plane wave, maximum diffraction-free distance, minimum central spot radius were given based on the generalized Huygens-Fresnel diffraction integral theory. Relative parameters were also theoretically simulated and calculated. In the experiment, high stability nanosecond Bessel laser pulses were generated by using a Q-switched Nd : YAG laser with a plane-antiresonant ring (ARR) resonator and an axicon system. The pulse duration, maximum diffraction-free distance, optical intensity in the cross-section and minimum central spot radius were measured. Experimental results were consistent with the theoretical analysis. The fine structure of the optical intensity in the laser beam cross-section was presented by film-scanning, and the resolution of the beam pattern is much higher than that in a laser parameter analyzer.

引用

页码：1073 / 1076