首页> 外文会议>Conference on opto-Ireland: Optics and photonics technologies and applications >Design of phase-only DOEs with a high signal-to-noise ratio
【24h】

Design of phase-only DOEs with a high signal-to-noise ratio

机译:仅使用高信噪比来设计阶段

获取原文
获取外文期刊封面目录资料

摘要

We report on the design of phase only diffractive optical elements (DOEs) with a locally improved signal to noise ratio. The formation of low noise regions is particularly useful for designs where it is difficult to achieve low background noise throughout the entire reconstruction. Such a case may arise in highly quantized elements or elements with a small spatial bandwidth. The DOE design is achieved by a direct search algorithm which allows for the definition of arbitrary low-noise areas in the reconstruction plane. However, the method is not restricted to direct search and should work with all direct schemes. While the local suppression of noise works rather well other performance criteria like diffraction efficiency and reconstruction error do, in practice, not suffer much from the additional constraints. This is due to the advantage that amplitude freedom and phase freedom can be maintained in large areas of the reconstruction. It is shown how this approach may be used in the design of beam splitters to prevent the formation of unwanted repeated spot patterns.
机译:我们在局部改进的信噪比上报告阶段仅衍射光学元件(DO)的设计。低噪声区域的形成对于设计在整个重建中难以实现低背景噪声的设计特别有用。这种情况可能在高度量化的元件或具有小空间带宽的元件中产生。 DOE设计是通过直接搜索算法实现的,该算法允许重建平面中任意低噪声区域的定义。但是,该方法不限于直接搜索,并应使用所有直接方案。虽然局部抑制噪声效果相当较好的其他性能标准,如衍射效率和重建错误在实践中,不受其他约束的影响。这是由于优点:幅度自由和相自由可以保持在重建的大面积中。示出了如何在光束分离器的设计中使用这种方法以防止形成不需要的重复点模式。

著录项

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