• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Applied optics >Improving the quality of phase maps in phase object digital holographic interferometry by finding the right reconstruction distance
【24h】

Improving the quality of phase maps in phase object digital holographic interferometry by finding the right reconstruction distance

机译：通过找到正确的重建距离来提高相位对象数字全息干涉术中相位图的质量

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

Improved quality of phase maps in pulsed digital holographic interferometry is demonstrated by finding the right reconstruction distance. The objective is to improve the optical phase information when the object under study is a phase object and when it is out of focus, leading to low contrast fringes in the phase map. A numerical refocusing is performed by introducing an ideal lens as a multiplication by a phase field in the Fourier domain, and then a region of maximum speckle correlation is found by comparing undisturbed and disturbed subimages in different refocused imaging planes. After finding the right reconstruction distance, a phase map of high visibility is constructed. By this technique a 30% reduction of the phase error for a flow of helium gas and a 50% reduction of the phase error for a weak thin lens were obtained, which resulted in a significant improvement of the visual appearance of the phase maps. (c) 2008 Optical Society of America.
机译：通过找到正确的重建距离，可以证明脉冲数字全息干涉术中相位图的改进质量。目的是改善当被研究物体是相位物体时以及当它不在焦点上时的光学相位信息，从而导致相位图中的低对比度条纹。通过将理想透镜与傅立叶域中的相场相乘来进行数值重新聚焦，然后通过比较不同重新聚焦成像平面中未受干扰和受干扰的子像来找到散斑相关性最大的区域。找到正确的重建距离后，便会构建高可见度的相位图。通过这种技术，氦气流的相位误差降低了30％，而薄弱的晶状体的相位误差降低了50％，这导致了相位图的视觉外观有了显着改善。 （c）2008年美国眼镜学会。

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