• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Optical engineering >Wavefront sensing for a nonuniform intensity laser beam by Shack-Hartmann sensor with modified Fourier domain centroiding
【24h】

Wavefront sensing for a nonuniform intensity laser beam by Shack-Hartmann sensor with modified Fourier domain centroiding

机译：具有修正傅里叶域质心的Shack-Hartmann传感器对非均匀强度激光束的波前感测

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A fast and simple solution is proposed to wavefront sensing for laser beams with spatial smoothly varying intensity, where Shack-Hartmann wavefront sensor and the modified Fourier domain centroiding algorithm are applied. Detailed analysis has been conducted to Fourier domain centroiding, simplifying the origin double-frame method to work with merely single frame, and revealing its interesting property of robustness to nonuniform intensity perturbation. The key parameter is also analyzed to optimize the algorithm's performance. Numerical simulations demonstrate that the proposed method outperforms the center of gravity algorithm, with an average phase error reduction up to approximately one order in root mean square. Application of the proposed method in joint amplitude-phase compensation system is also verified by simulation with practical models and parameters. The modified Fourier domain centroiding is promising to enhance real-time actual wavefront measurement for adaptive optics in high-power lasers, such as joint amplitude-phase compensation.
机译：针对Shack-Hartmann波前传感器和改进的傅立叶域质心算法，提出了一种快速简单的解决方案，用于对空间平滑变化强度的激光进行波前传感。已经对傅立叶域质心进行了详细分析，简化了原点双帧方法，使其仅适用于单帧，并揭示了其对不均匀强度扰动的鲁棒性。还分析了关键参数以优化算法的性能。数值仿真表明，所提出的方法优于重心算法，其平均相位误差减小了约均方根。通过实际模型和参数仿真，验证了该方法在联合幅相补偿系统中的应用。改进的傅立叶域质心化有望增强大功率激光器中自适应光学器件的实时实际波前测量，例如联合幅度相位补偿。

著录项

  • 来源
    《Optical engineering》 |2014年第4期|044101.1-044101.9|共9页
  • 作者

    Tenghao Li; Lei Huang; Mali Gong;

  • 作者单位

    Tsinghua University, Center for Photonics and Electronics, Department of Precision Instruments, Beijing 100084, China;

    Tsinghua University, Center for Photonics and Electronics, Department of Precision Instruments, Beijing 100084, China;

    Tsinghua University, Center for Photonics and Electronics, Department of Precision Instruments, Beijing 100084, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    high-power laser; wavefront sensor; adaptive optics;

    机译：大功率激光波前传感器自适应光学;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号