Photorefractive incoherent-to-coherent optical converter based on anisotropic self-diffraction in BaTiO3

Ching Cherng Sun, Bor Wang, Jenq Yang Chang

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

A photorefractive incoherent-to-coherent optical converter (PICOC) is demonstrated; conversion is accomplished by anisotropic self-diffraction in BaTiO3. The setup of the PICOC is easy, and only two writing beams are required. The diffraction efficiency reaches 50%, and the resolution is 22 line pairs (lp)/mm in a typical-size crystal. Further, the resolution reaches 40 lp/mm when a BaTiO3:Rh crystal of thickness 1.2 mm is used, and the diffraction efficiency is as high as 51%. The resolution of the PICOC can be increased effectively by reduction of the crystal thickness with no penalty for low diffraction efficiency.

Original languageEnglish
Pages (from-to)8247-8253
Number of pages7
JournalApplied Optics
Volume37
Issue number35
DOIs
StatePublished - 10 Dec 1998

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