Fractional Talbot imaging set-up for high-efficiency real-time diffractive optics

Jari Turunen

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


An optical configuration based on the fractional Talbot effect is proposed to improve the diffraction efficiency of dynamic diffractive optical elements written on electronically addressed liquid crystal spatial light modulators with partially opaque pixels, or on any other spatial light modulator, where a part of the pixel area is inactive. Using diffractive cover plates, the high design efficiency of an ideal multilevel diffractive optical element can almost be achieved even if 3/4 of the pixel area is blocked by drive electronics; without such cover plates, the efficiency would be limited to 1/16 of the design efficiency.

Original languageEnglish
Pages (from-to)243-250
Number of pages8
JournalPure and Applied Optics: Journal of the European Optical Society Part A
Issue number3
Publication statusPublished - May 1993


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