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Proceedings Paper

Encoding complex values using two DLP spatial light modulators
Author(s): Michael F. Becker; Sih-Ying Wu; Jinyang Liang
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Paper Abstract

We present a method to encode complex values into three or four quantized complex values for wavefront modulation using two digital micromirror devices (DMDs). This encoding offers advantages to eliminate the twin image or suppress the zero order diffraction as well to improve hologram fidelity. The optical architecture utilizes a Michelson interferometer with a DMD in Littrow configuration replacing the mirrors to combine the two holograms with the desired phase shift. System performance was examined using numerical simulations and experimental measurements to explore different encoding methods for hologram reconstruction. Both ZOD and conjugate image suppression were demonstrated for different encoding schemes.

Paper Details

Date Published: 8 March 2013
PDF: 8 pages
Proc. SPIE 8618, Emerging Digital Micromirror Device Based Systems and Applications V, 86180M (8 March 2013); doi: 10.1117/12.2005023
Show Author Affiliations
Michael F. Becker, The Univ. of Texas at Austin (United States)
Sih-Ying Wu, The Univ. of Texas at Austin (United States)
Jinyang Liang, Washington Univ. in St. Louis (United States)


Published in SPIE Proceedings Vol. 8618:
Emerging Digital Micromirror Device Based Systems and Applications V
Michael R. Douglass; Patrick I. Oden, Editor(s)

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