In situ Mapping of Light-Induced Refractive Index Gratings by Digital Holographic Microscopy

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概要

• 論文の詳細を見る

• 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.

• 2010-10-25

著者

• CHENG Chau-Jern

  Institute of Electro-Optical Engineering, National Chiao-Tung University

• Tu Han-yen

  Department Of Electronic Engineering St. John's & St. Mary's Institute Of Technology

• Lai Xin-Ji

  Institute of Electro-Optical Science and Technology, National Taiwan Normal University, Taipei 11677, Taiwan

• Lin Yu-Chih

  Institute of Electro-Optical Science and Technology, National Taiwan Normal University, Taipei 11677, Taiwan

• Tu Han-Yen

  Department of Electronic Engineering, St. John's University, Taipei 25135, Taiwan

• Lee Yi-Ta

  Institute of Electro-Optical Science and Technology, National Taiwan Normal University, Taipei 11677, Taiwan

関連論文

• Trainable Pattern Classifier Using a Computer-Generated Hologram
• Multiple Polarization Encoding for Gray Image Encryption Based on Liquid Crystal Exclusive OR Logic
• In situ Mapping of Light-Induced Refractive Index Gratings by Digital Holographic Microscopy
• Implementation of a Nonzero-order Joint Transform Correlator Using Interferometric Technique
• Color Reproduction of Multi-Wavelength Digital Holography Using a Color Correction Algorithm
• Complex Modulation Characterization of Liquid Crystal Spatial Light Modulators by Digital Holographic Microscopy
• Full Phase Encoding for Digital Holographic Encryption Using Liquid Crystal Spatial Light Modulators

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