水冷式离焦变形镜技术研究

发布时间：2018-05-01 01:17

本文选题：非稳腔 + 变形镜　；参考：《强激光与粒子束》2017年08期

【摘要】：根据非稳腔薄片激光器腔内离焦的特点和主动校正的应用需求,针对性地设计离焦变形镜,对激光器腔内离焦进行实时补偿。采用压电陶瓷作为驱动器,圆形镜面圆心处设置1个驱动器,圆周上均布4个驱动器的5通道布局模式,仿真分析了筋板厚度和镜片厚度对离焦的校正效果影响,在优化设计的基础上研制出水冷式离焦变形镜,其静态面形PV值为0.34μm,波前动态范围为±16μm。在离焦变形镜和二维变形镜组合模式下进行了薄片激光器强光主动光学校正试验,谐振腔腔内像差PV值从6.76减小到1.44,光束质量从19.5提高到6.5,有效地改善了输出光束质量,验证了离焦变形镜对非稳腔薄片激光器离焦校正的有效性和实用性。
[Abstract]:According to the characteristics of the defocus and the application requirement of the active correction, the defocus deformable mirror is designed to compensate for the defocus in the laser cavity. Using the piezoelectric ceramic as the driver, 1 drives are set up in the circular mirror center, and the 5 channel layout mode of the 4 drives is distributed on the circle, and the simulation analysis is made. The effect of the thickness of the stiffener and the thickness of the lens on the correction of the defocus is affected. On the basis of the optimized design, the cold deformable deformable mirror is developed. The PV value of the static surface is 0.34 m, the dynamic range of the wavefront is + + 16 M., and the active optical correction test of the thin laser beam is carried out under the combined mode of the deformable deformable mirror and the two-dimensional deformable mirror. The PV value of the intracavity aberration is reduced from 6.76 to 1.44, and the beam quality is increased from 19.5 to 6.5. The output beam quality is improved effectively. The effectiveness and practicability of the defocused deformable mirror for the defocusing correction of the unstable cavity thin slice laser are verified.

【作者单位】：中国工程物理研究院应用电子学研究所;中国工程物理研究院高能激光科学与技术重点实验室;
【基金】：中国工程物理研究院高能激光科学与技术重点实验室基金项目
【分类号】：TH74;TN248

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