Photorefractive KNbO<sub>3</sub>:Fe is characterized by monitoring of the electric currents induced in the crystal that are due to applied illumination. Important photorefractive parameter values, such as the Maxwell relaxation time, carrier-diffusion length, carrier-screening length, and the magnitude of the photogalvanic current are thereby estimated.
© 1997 Optical Society of America
N. Noginova, N. Kukhtarev, T. Kukhtareva, M. A. Noginov, H. J. Caulfield, P. Venkateswarlu, D. Parker, and P. P. Banerjee, "Photoinduced electric current in Fe-doped KNbO3," J. Opt. Soc. Am. B 14, 1390-1395 (1997)