Photorefractive effect generated in sillenite crystals by picosecond pulses and comparison with the quasi continuous regime - Archive ouverte HAL Access content directly
Journal Articles Journal of the Optical Society of America B Year : 1990

Photorefractive effect generated in sillenite crystals by picosecond pulses and comparison with the quasi continuous regime

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Abstract

Photorefractive gratings are generated in a BSO crystal by the interference of two 25-psec pulses at 532 nm. The grating is analyzed by diffraction of a third pulse or a weak cw argon laser, which permits a continuous monitoring of its evolution from picoseconds to milliseconds. The grating builds up in two steps; their relative contributions vary strongly with fluence. This behavior is explained by means of a band transport model with shallow traps. Values of mobility, lifetimes, and diffusion lengths of carriers are derived and compared with those obtained in experiments conducted with low-power lasers; the values show a striking continuity from cw to picosecond regimes.
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Dates and versions

hal-00856195 , version 1 (30-08-2013)

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  • HAL Id : hal-00856195 , version 1

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Gilles Pauliat, Gérald Roosen. Photorefractive effect generated in sillenite crystals by picosecond pulses and comparison with the quasi continuous regime. Journal of the Optical Society of America B, 1990, 7 (12), pp.2259-2267. ⟨hal-00856195⟩
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