Akademik Veri Yönetim Sistemi
APPLIED PHYSICS B-LASERS AND OPTICS, cilt.70, sa.1, ss.77-84, 2000 (SCI-Expanded)
Photoconductivity and photorefractive two-wave-mixing in a diffusion regime have been analyzed in a germanium-doped Cd(0.99)Zn(0.01)Te crystal at lambda = 1.064 mu m. Temporal responses present a transient enhancement depending on total illumination and temperature. This enhancement depends also on the initial illumination present on the crystal. Steady-state photorefractive gain is rather high and presents an intensity-temperature resonance phenomenon. In addition, preliminary measurements have been performed at lambda = 1.55 mu m. More classical behavior has been observed and a relatively lower photorefractive gain has been measured. We interpret these differences in terms of multiple captures induced by at least two deep traps and a shallow trap located within the band gap of the material. Experimental results show this material to have very promising prospects for further photorefractive developments.