...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Optical engineering >Comprehensive numerical design approach for refractive laser beam shapers to generate annular irradiance profiles
【24h】

Comprehensive numerical design approach for refractive laser beam shapers to generate annular irradiance profiles

机译：折光激光光束整形器产生环形辐照度轮廓的综合数值设计方法

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 refractive laser beam shaper typically consists of either two plano-aspheric lenses or one thick lens with two aspherical surfaces. Ray mapping is a general optical design technique for irradiance reshaping based on geometric optics. Although ray mapping, in principle, allows generating any rotational-symmetric irradiance profile, in the literature this technique is mainly used to transform a Gaussian irradiance profile to a uniform rotational-symmetric profile. For more complex profiles, especially with low intensity in the inner region (such as annular profiles), a high sampling rate is required to ensure an accurate calculation of the surfaces. In practice, the high sampling rate increases the numerical effort to calculate the aspherical surfaces and the simulation time to verify the design considerably. In this work, we evaluate different sampling approaches and surface construction methods. This allows us to propose and demonstrate a comprehensive numerical approach to efficiently design refractive laser beam shapers to generate rotational-symmetric collimated beams with annular irradiance profiles. Ray tracing analysis for several annular irradiance profiles demonstrates the excellent performance of the designed lenses and the versatility of our design procedure.
机译：折射激光束整形器通常由两个平非球面透镜或一个具有两个非球面表面的厚透镜组成。射线贴图是基于几何光学的用于辐照度整形的常规光学设计技术。尽管射线映射原则上可以生成任何旋转对称的辐照度轮廓，但是在文献中，该技术主要用于将高斯辐照度轮廓转换为均匀的旋转对称的轮廓。对于更复杂的轮廓，尤其是内部区域强度​​较低的轮廓（例如环形轮廓），需要较高的采样率以确保对表面进行精确的计算。在实践中，高采样率增加了计算非球面的数值工作，并增加了仿真时间以相当大地验证设计。在这项工作中，我们评估了不同的采样方法和表面构造方法。这使我们能够提出并演示一种综合的数值方法，以有效地设计折射激光束整形器，以生成具有环形辐照度轮廓的旋转对称准直光束。对几种环形辐照度轮廓的光线跟踪分析表明，所设计的透镜具有出色的性能，并且设计过程具有多功能性。

著录项

  • 来源
    《Optical engineering》 |2014年第8期|085103.1-085103.7|共7页
  • 作者

    Meijie Li; Youri Meuret; Fabian Duerr; Michael Vervaeke; Hugo Thienpont;

  • 作者单位

    Vrije Universiteit Brussel, Brussels Photonics Team, Pleinlaan 2, Brussels B-1050, Belgium;

    Vrije Universiteit Brussel, Brussels Photonics Team, Pleinlaan 2, Brussels B-1050, Belgium,KU Leuven, Light and Lighting Laboratory, Gebroeders De Smetstraat 1, Ghent B-9000, Belgium;

    Vrije Universiteit Brussel, Brussels Photonics Team, Pleinlaan 2, Brussels B-1050, Belgium;

    Vrije Universiteit Brussel, Brussels Photonics Team, Pleinlaan 2, Brussels B-1050, Belgium;

    Vrije Universiteit Brussel, Brussels Photonics Team, Pleinlaan 2, Brussels B-1050, Belgium;

  • 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

    refractive laser beam shaping; annular irradiance distributions; free-form surface construction; splines; polynomials;

    机译：折射激光束整形;环形辐照度分布;自由曲面的构造;花键多项式;

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