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Photorefraction in LiNbO3:Fe crystals with femtosecond pulses at 532 nm

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Abstract

Photorefractive index gratings are written into iron-doped lithium niobate crystals using femtosecond laser pulses and cw light, both having a wavelength of 532 nm. The saturation value of the refractive index changes in as-grown samples is found to decrease with increasing peak pulse intensity. Furthermore, in oxidized crystals, writing with femtosecond pulses is much faster than with cw light and retains about the same writing speed than in as-grown crystals. We propose a charge transport model that addresses the special case of recording with high intensity femtosecond pulses.

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Authors and Affiliations

  1. Institute of Physics, University of Bonn, Wegelerstraße 8, 53115, Bonn, Germany

    D. Maxein, J. Bückers, D. Haertle & K. Buse

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  1. D. Maxein
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  2. J. Bückers
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  3. D. Haertle
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  4. K. Buse
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Correspondence to D. Maxein.

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Maxein, D., Bückers, J., Haertle, D. et al. Photorefraction in LiNbO3:Fe crystals with femtosecond pulses at 532 nm. Appl. Phys. B 95, 399–405 (2009). https://doi.org/10.1007/s00340-009-3490-3

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  • DOI: https://doi.org/10.1007/s00340-009-3490-3

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