Mizeikis, Vyngantas; Juodkazis, Saulius; Sudzius, Markas; Misawa, Hiroaki; Gamaly, Eugene G; Rode, Andrei V; Krolikowski, Wieslaw; Kitamura, Kenji
We present experimental and theoretical study of refractive index modification induced by femtosecond laser pulses in photorefractive crystals. The single pulses with central wavelength of 800 nm, pulse duration of 150 fs, and energy in the range of 6-130 nJ, tightly focused into the bulk of Fe-doped LiNbO3 and stoichiometric LiTaO3 crystals induce refractive index change of up to about 10-3 within the volume of about (2,0 × 2,0 × 8,0) μm3. The photomodification is independent of the...[Show more]
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