期刊文献+

光寻址液晶空间光调制器用于激光光束整形的可控系统和设计算法 被引量:8

Controllable system and design algorithm for laser beam shaping using optical addressing liquid crystal spatial light modulator
原文传递
导出
摘要 提出了一种利用光寻址液晶空间光调制器(LC-SLM)来实现实时可控的激光光束整形的系统和算法。用几何变换法和盖师贝格-撒克斯通(G-S)算法对有振幅调制和位相畸变光束进行均匀分布的平顶光束整形及数值模拟,用几何变换法可以得到非常好的小尺度的均匀性输出光束,而G-S算法能够有效地改善入射光束的大尺度不均匀性。为了减少输出光束的均方根误差和顶部不均匀度,提出结合几何变换方法和G-S算法,由几何变换方法得到的相位分布为G-S算法的初始相位分布。计算机设计的仿真结果表明:利用这种算法可以有效减少大尺度的不均匀度值,并得到合适的输出光束。 To achieve real-time controllable laser beam shaping,a system using an optical addressing liquid crystal spatial light modulator(LC-SLM) and a phase algorithm were presented.Simulation results of the geometrical transform method and G-S algorithm for shaping a Gaussian beam with amplitude modulation and phase distortion to a uniform distribution flat-top beam were analyzed.The output beam obtained by the geometrical transform method can have a uniform distribution with small scale,while the G-S algorithm can improve the unevenness of the incident beam with large scale.In order to decrease both the error of root mean square and the unevenness on the top of the output beam,a new algorithm was developed that combined the geometrical transform method and the G-S iterative algorithm.The phase distribution function from the geometrical transform was used as the initial phase distribution function in the iterative process of the G-S algorithm.The simulation results show that the improved algorithm is effective in both decreasing the unevenness and obtaining a suitable output beam.
出处 《红外与激光工程》 EI CSCD 北大核心 2010年第1期47-50,共4页 Infrared and Laser Engineering
基金 国家"863"计划资助项目
关键词 激光光束整形 液晶光阀 几何变换方法 G-S算法 Laser beam shaping LC-SLM Geometrical transformation method G-S algorithm
  • 相关文献

参考文献7

二级参考文献14

  • 1倪明,陆启生,蒋志平.快速汉克尔变换及光束均匀化[J].应用激光,1996,16(4):150-154. 被引量:1
  • 2黄骝,赵宇.变Q缓慢腔倒空激光脉冲与腔外整形研究[J].激光与光电子学进展,1996(7):50-50. 被引量:3
  • 3叶一东,吕百达,蔡邦维,隋展.强激光的时间整形和空间整形———利用双折射透镜组实现激光束的空间整形[J].激光技术,1996,20(6):324-328. 被引量:9
  • 4张艳,吴丽莹,张健.电寻址空间光调制器相位调制特性的研究[J].红外与激光工程,2007,36(3):316-318. 被引量:5
  • 5SERATI S, STOCKLEY J. Advances in liquid crystal based devices for wavefront control and beamsteering [C]// Proceedings of SPIE, Advanced Wavefront Control: Methods, Devices, and Applications Ⅲ, 2005, 5894: 1-13.
  • 6NAUMOV A F,LOVE G D. Perspectives of LC for adaptive optics applications [C]//Proceedings of SPIE, High- Resolution Wavefront Control: Methods, Devices, and Applications II, 2000, 4127: 57-65.
  • 7LOVE G D. Wavefront correction and production of Zemike modes with a liquid crystal spatial light modulator [J]. Applied Optics,1997, 36 (7):1517-1524.
  • 8GU D,WINKER B, WEN B. Wavefront control with a spatial light modulator containing dual frequency liquid crystal [C]// Proceedings of SPIE, Advanced Wavefront Control: Methods, Devices, and Applications Ⅱ, 2004, 5553: 58-82.
  • 9OLIVIER S S, KARTZ M W, BAUMAN B J. High-resolution wavefront control using liquid crystal spatial light modulators [C]//Proceedings of SPIE, High-Resolution Wavefront Control: Methods, Devices, and Applications, 1999, 3760:47-51.
  • 10ZHANG Hong-xin, ZHANG Jian, WU Li -ying. Evaluation of phase-only liquid crystal spatial light modulator for phase modulation performance using a Twyman-Green interferometer [J]. Measurement Science and Technology, 2007, 18:1724-1728.

共引文献23

同被引文献98

引证文献8

二级引证文献52

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部