Laser projection using generalized phase contrast

Jesper Glückstad, Darwin Palima, Peter John Rodrigo, Carlo Amadeo Alonzo

    Research output: Contribution to journalJournal articleResearchpeer-review


    We demonstrate experimental laser projection of a gray-level photographic image with 74% light efficiency using the generalized phase contrast (GPC) method. In contrast with a previously proposed technique [Alonzo et al., New J. Phys. 9, 132 (2007)], a new approach to image construction via GPC is introduced. An arbitrary phase shift filter eliminates the need for high-frequency modulation and conjugate phase encoding. This lowers device performance requirements and allows practical implementation with currently available dynamic spatial light modulators. (c) 2007 Optical Society of America.
    Original languageEnglish
    JournalOptical Letters
    Issue number22
    Pages (from-to)3281-3283
    Publication statusPublished - 2007


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