We demonstrate the extension of the photorefractive effect in BaTiO3 crystals to the 1.5-μm wavelength regime, which is obtained by two-photon absorption induced by intense femtosecond light pulses. The strong dependence of the effect on the light’s intensity permits nondestructive readout of the photorefractively induced pattern by low-intensity light. One can thus use the photorefractive effect in the 1.5-μm regime to form optical components for communication applications.
© 1996 Optical Society of America
Original Manuscript: January 22, 1996
Published: August 1, 1996
Moshe Horowitz, Y. Barad, Y. Silberberg, and Baruch Fischer, "Photorefractive effect in a BaTiO3 crystal at the 1.5-μm wavelength regime by two-photon absorption," Opt. Lett. 21, 1120-1122 (1996)