Photorefractive effect in paraelectric DKDP

D. V. Sin'ko; Boris V. Anikeev

doi:10.1117/12.239225

29 April 1996 Photorefractive effect in paraelectric DKDP

D. V. Sin'ko, Boris V. Anikeev

Proceedings Volume 2795, Nonlinear Optics of Liquid and Photorefractive Crystals; (1996) https://doi.org/10.1117/12.239225
Event: Nonlinear Optics of Liquid and Photorefractive Crystals, 1995, Ai-Danil, Crimea, Ukraine

Abstract

We designed experimental equipment realizing one of the time-spectroscopy methods for detail investigation of photorefractive process in the DKDP single crystal at room temperature. A non-steady-state optic-polarization technique with a pulse pumping (pulse duration of Q- switched YAP:Nd³⁺-laser was approximately 20 ns, energy density of pulses varied from 0.2 J/cm² up to 1.6 J/cm²) has been used in experiments. This allowed us to achieve temporal resolution for responses of various components of photorefractive (PR) effect with different characteristic times (acoustic component is approximately 12 ms, fast component is approximately 1 ms and slow component is from 4 ms up to 100 ms). As a result a linear dependence of the pumping-induced internal field magnitude on pumping pulse energy at the 1.08 mm is established. It was shown for the first time that mechanisms of excitation of fast and slow components are independent. The present results may create basis for detail PR effect investigations of the KDP group crystals above the Curie point with prospect of further holographic applications and a new technique to measure laser pulses energy.

Citation Download Citation

D. V. Sin'ko and Boris V. Anikeev "Photorefractive effect in paraelectric DKDP", Proc. SPIE 2795, Nonlinear Optics of Liquid and Photorefractive Crystals, (29 April 1996); https://doi.org/10.1117/12.239225

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KEYWORDS

Crystals

Acoustics

Laser crystals

Electro optical modeling

Laser energy

Photorefraction

Holography

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