Numerical simulation and experiments on unstable resonator for non-chain DF laser

	Numerical simulation and experiments on unstable resonator for non-chain DF laser
	Ruan, P.; Q. Pan; J. Xie; C. Liu and Y. Chai
	2017
发表期刊	Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
卷号	46 期号:2
摘要	Based on the Fresnel-Kirchhoff's integral theory, the three-dimensional near filed and far filed light intensity distribution of non-chain pulsed DF laser with unstable resonator was obtained using Fast Fourier algorithm. Numerical calculation shows that the mode pattern is ring shaped at near field and multistage diffraction ring with central bright spot at far field, and the near field spot laser intensity will be concentrated as M increases, while the far field angle of divergence will increase with the increment of effective Fresnel number (Neq). Then the influence of mirror tilt on near-field light intensity distribution is investigated, indicating that the beam in near field will be deteriorated when misalignment appears, the larger of the tilt angle the much more obvious of asymmetric light distribution. The measured light intensity distribution on near-field and far-field and the variation of near filed light intensity distribution with mirror tilt angle are consistent with the simulation results, and the far-field divergence obtained is 1.2 mrad. The simulation results can provide a basis for cavity mirror misalignment diagnostic analysis and resonator regulation of non-chain DF laser. 2017, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.
收录类别	ei
语种	中文
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/59170
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Ruan, P.,Q. Pan,J. Xie,et al. Numerical simulation and experiments on unstable resonator for non-chain DF laser[J]. Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering,2017,46(2).
APA	Ruan, P.,Q. Pan,J. Xie,&C. Liu and Y. Chai.(2017).Numerical simulation and experiments on unstable resonator for non-chain DF laser.Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering,46(2).
MLA	Ruan, P.,et al."Numerical simulation and experiments on unstable resonator for non-chain DF laser".Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering 46.2(2017).

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