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Improving performance of single-pass real-time holographic projection

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Document pages: 15 pages

Abstract: This work describes a novel approach to time-multiplexed holographicprojection on binary phase devices. Unlike other time-multiplexed algorithmswhere each frame is the inverse transform of independently modified targetimages, Single-Transform Time-Multiplexed (STTM) hologram generation producesmultiple sub-frames from a single inverse transform. Uniformly spacing complexrotations on the diffraction field then allows the emulation of devicescontaining 2^N modulation levels on binary devices by using N sub-frames. Incomparison to One-Step Phase Retrieval (OSPR), STTM produces lower mean squarederror for up to N = 5 than the equivalent number of OSPR sub-frames with ageneration time of 1 N of the equivalent OSPR frame. A mathematicaljustification of the STTM approach is presented and a hybrid approach isintroduced allowing STTM to be used in conjunction with OSPR in order tocombine performance benefits.

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