Open AccessComparison of generalized phase contrast and computer generated holography for laser image projection
Author(s) -
Darwin Palima,
Jesper Glückstad
Publication year - 2008
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.005338
Subject(s) - optics , holography , speckle pattern , computer science , phase retrieval , phase modulation , speckle noise , projection (relational algebra) , modulation (music) , phase noise , physics , algorithm , fourier transform , quantum mechanics , acoustics
Laser projection based on phase modulation promises several advantages over amplitude modulation. We examine and compare the merits of two phase modulation techniques; phase-only computer generated holography and generalized phase contrast, for the application of dynamic laser image projection. We adopt information theory as a guiding framework and analyze information-relevant metrics such as space-bandwidth product, output display resolution, efficiency, speckle noise, computational load and device requirements. The analysis takes into account the perspective of potential end-users.