Precise holograms using complex light modulation

Jinyang Liang; Michael F. Becker

doi:10.1117/12.2040569

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7 March 2014 Precise holograms using complex light modulation

Jinyang Liang, Michael F. Becker

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Proceedings Volume 8979, Emerging Digital Micromirror Device Based Systems and Applications VI; 89790D (2014) https://doi.org/10.1117/12.2040569
Event: SPIE MOEMS-MEMS, 2014, San Francisco, California, United States

Abstract

Our objective is precise wavefront reconstruction using complex modulation of light. A high precision amplitude beam shaper based on a digital micromirror device is used to image a shaped beam onto a phase-only spatial light modulator. To achieve our goal, a significant first step is deriving an efficient backwards propagation algorithm for hologram design that does not degrade the image by truncating high spatial frequencies or by aliasing. In addition, we show that reconstruction fidelity also depends on spatial bandwidth of the amplitude modulation. Thus, a minimum in error is found by considering both factors. Simulation verifies that the target image can be successfully reconstructed by using the proposed method.

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Jinyang Liang and Michael F. Becker "Precise holograms using complex light modulation", Proc. SPIE 8979, Emerging Digital Micromirror Device Based Systems and Applications VI, 89790D (7 March 2014); https://doi.org/10.1117/12.2040569

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