Photorefraction demonstrations using electrooptic PLZT ceramics modulators

Maris Ozolinsh; Dag Hanstorp

doi:10.1117/12.524469

19 November 2003 Photorefraction demonstrations using electrooptic PLZT ceramics modulators

Maris Ozolinsh, Dag Hanstorp

Proceedings Volume 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life; (2003) https://doi.org/10.1117/12.524469
Event: 19th Congress of the International Commission for Optics: Optics for the Quality of Life, 2002, Florence, Italy

Abstract

PLZT ceramics electrooptic (EO) modulator was designed for demonstrations and student's laboratory works to study photorefraction using Ar⁺ laser (λ = 514 nm). PLZT element had an aperture of 1.5 x 8 mm² and thickness of 1.5 mm. Reading of recorded patterns was realized by applying to the element the biasing electric field. The most efficient writing took place for ceramics composition PLZT 8.75/65/35. The total intensity of two writing beams was up to 300 mW, the applied electric field during writing -- up to 20 kV/cm. The diffraction efficiency depended on the applied biasing reading electric field E_BR. For the reading He-Ne laser the diffraction efficiency η ≈ 0.48 was obtained at the bias field values E_BR = 13 kV/cm. The simplicity of the modulator alignment and writing and reading processes promote the use of such modulators in the teaching process.

Citation Download Citation

Maris Ozolinsh and Dag Hanstorp "Photorefraction demonstrations using electrooptic PLZT ceramics modulators", Proc. SPIE 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life, (19 November 2003); https://doi.org/10.1117/12.524469

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