Estimation of far-field divergence of high power TEA COinf2/inf laser

	Estimation of far-field divergence of high power TEA COinf2/inf laser
	Zhang, K.; J. Lu; G. Yang; F. Chen; D. Li; C. Zheng and J. Guo
	2015
发表期刊	Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
卷号	44 期号:8 页码:2286-2291
摘要	In the application of high-power laser long distance transmission, the far-field divergence is the one of important parameters to evaluate the laser performance. Conventional methods cannot be used to measure the far field divergence precisely because of the unique characteristics of TEA COinf2/inf laser, such as high average power, high peak power and large beam size. In order to solve this problem, a fitting analysis method was proposed to estimate the far field divergence of high power TEA COinf2/inf laser. Firstly, the far- field divergence of multimode Gaussian laser with large Fresnel number was calculated theoretically. Then, the near-field beam size (20 m) was measured experimentally using a spot ablated method, and the beam quality and waist radius were calculated based on the M2 factor, and furthermore the far-field divergence was deduced. Finally, the results of these two methods were compared, and the deviation between the results was also discussed. It is indicated that the fitting method based on the experimental data is available to accurately evaluate the far-field beam divergence of high power TEA COinf2/inf laser. , 2015, Chinese Society of Astronautics. All right reserved.
文章类型	期刊论文
收录类别	EI
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/56317
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Zhang, K.,J. Lu,G. Yang,et al. Estimation of far-field divergence of high power TEA COinf2/inf laser[J]. Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering,2015,44(8):2286-2291.
APA	Zhang, K.,J. Lu,G. Yang,F. Chen,D. Li,&C. Zheng and J. Guo.(2015).Estimation of far-field divergence of high power TEA COinf2/inf laser.Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering,44(8),2286-2291.
MLA	Zhang, K.,et al."Estimation of far-field divergence of high power TEA COinf2/inf laser".Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering 44.8(2015):2286-2291.

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