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Proceedings Paper

Study on encoding technique of phase-shifting unit based on LC-SLM
Author(s): Yanmei Wu; Qinghe Song; Junchang Li; Jinbin Gui
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Paper Abstract

Phase-shifting is one of key technologies in the digital holography or interferometry. Exact and stable phase shifts play an important role in the experimental results. Computer-generated holograph phase-shifting unit based on LC-SLM can produce phase shift with repeatable and high stability. In the system, it is very crucial to encode the computer-generated holograph on LC-SLM. This paper investigates phase-shifting precision and stability as well as diffraction efficiency by using various encoding methods in theory and experiment. The work in the paper establishes foundation that computer-generated holograph phase-shifting unit based on LC-SLM can be applied in the digital holography and interferometry system.

Paper Details

Date Published: 4 January 2008
PDF: 8 pages
Proc. SPIE 6832, Holography and Diffractive Optics III, 68320T (4 January 2008); doi: 10.1117/12.755335
Show Author Affiliations
Yanmei Wu, Kunming Univ. of Science and Technology (China)
Qinghe Song, Kunming Univ. of Science and Technology (China)
Junchang Li, Kunming Univ. of Science and Technology (China)
Jinbin Gui, Kunming Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 6832:
Holography and Diffractive Optics III
Yunlong Sheng; Dahsiung Hsu; Chongxiu Yu, Editor(s)

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