Determining the refractive index profile of micro-optical elements using transflective digital holographic microscopy

Yu Chih Lin*, Chau Jern Cheng

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

40 引文 斯高帕斯(Scopus)

摘要

This study proposes a novel method for directly measuring the spatial distribution of the refractive index of transparent or semi-transparent micro-optical elements using digital holographic microscopy, which involves transmission and reflection architectures. The proposed transflective digital holographic microscope system simultaneously records both the transmitted and the reflected waves from the micro-optical element and then numerically reconstructs the phase information and refractive index profile. No prior knowledge of the thickness and curvature of the element to be measured is required. In this study, the spatial refractive index profiles of a microlens array and a gradient index lens are demonstrated experimentally. Unlike the conventional scanning refractive ray method, the proposed method supports the rapid full-field nondestructive measurement and direct observation of the spatial index variation and structure of micro-optical elements.

原文英語
文章編號115402
期刊Journal of Optics
12
發行號11
DOIs
出版狀態已發佈 - 2010 11月

ASJC Scopus subject areas

  • 電子、光磁材料
  • 原子與分子物理與光學

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