In situ mapping of light-induced refractive index gratings by digital holographic microscopy

Yu Chih Lin*, Yi Ta Lee, Xin Ji Lai, Chau Jern Cheng, Han Yen Tu

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

5 引文 斯高帕斯(Scopus)

摘要

This work presents a technique for in situ measurement of light-induced refractive index gratings in epoxy resin using digital holographic microscopy (DHM). The reconstructed phase image derived from a digital hologram can exhibit the grating structure and refractive index profile of an epoxy resin hologram. Reconstruction properties of finite aperture effect in the DHM system are considered and analyzed theoretically. Due to the high spatial frequency components collected by the objective lens, the DHM system can measure fine grating structures and numerically determine the reconstructed images in increased detail. Grating formation and dynamic behavior during the light-induced holographic process can be demonstrated experimentally and characterized using the proposed scheme. Compared with an optical holographic readout, the proposed technique facilitates direct observation and substantial understanding of the holographic recording mechanism in a microscopic view.

原文英語
頁(從 - 到)1025011-1025017
頁數7
期刊Japanese Journal of Applied Physics
49
發行號10
DOIs
出版狀態已發佈 - 2010 十月

ASJC Scopus subject areas

  • 工程 (全部)
  • 物理與天文學 (全部)

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