Abstract
We observe electric pulses generated in sillenite crystals (Bi12SiO20 and Bi12TiO20) by 100-fs laser pulses at the wavelength of 400 nm (below the band gaps of both crystals). The peak value of the current pulses scales linearly with the intensity of laser pulses up to ∼45 GW/cm2. The direction of the induced current depends on the polarization state of the laser pulse. This polarization dependence and features of the current detection via charge accumulation at the sample electrodes allow us to conclude that the electric pulses are generated due to the linear photogalvanic effect.
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Kamshilin, A.A., Grachev, A.I., Golik, S.S. et al. Linear photogalvanic current excited in sillenite crystals by femtosecond laser pulses. Appl. Phys. B 106, 899–903 (2012). https://doi.org/10.1007/s00340-011-4742-6
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DOI: https://doi.org/10.1007/s00340-011-4742-6