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Proceedings Paper

Study of the modulation characterization of phase-only liquid crystal spatial light modulator by digital holography
Author(s): Spozmai Panezai; Dayong Wang; Jie Zhao; Yunxin Wang
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Paper Abstract

The liquid crystal spatial light modulator is becoming a more and more important device due to its wide applications. During its characterization, the phase modulation is the most important one. In this paper, the modulation characterization of a PLUTO phase-only spatial light modulator based on liquid crystal on silicon (LCOS) is studied by applying the lensless Fourier transform digital holography. In the digital holography, the LCOS is used as a reflected sample which modulates the phase of the incident wavefront with respect to the addressed gray level and gives the information of entire active region. This result is then compared with the result obtained by using conventional Michelson Interferometric method and both results are in good accordance with each other. At last the same holographic set up is used for the imaging of phase grating as a reflected object which is addressed to the LCOS and the clear profilometry of the grating is achieved.

Paper Details

Date Published: 15 October 2012
PDF: 6 pages
Proc. SPIE 8420, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing, 84200F (15 October 2012); doi: 10.1117/12.975751
Show Author Affiliations
Spozmai Panezai, Beijing Univ. of Technology (China)
Dayong Wang, Beijing Univ. of Technology (China)
Jie Zhao, Beijing Univ. of Technology (China)
Yunxin Wang, Beijing Univ. of Technology (China)


Published in SPIE Proceedings Vol. 8420:
6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical System Technologies for Manufacturing and Testing
Xiangdi Lin; Yoshiharu Namba; Tingwen Xing, Editor(s)

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