ISSN:
1089-7550
Quelle:
AIP Digital Archive
Thema:
Physik
Notizen:
We use the asymmetry of beam coupling with respect to the orientation of the polar axis in a nominally undoped barium titanate crystal to determine the electro-optic and absorptive "gain'' in the usual beam-coupling geometry. For small grating wave vectors, the electro-optic coupling vanishes but the absorptive coupling remains finite and positive. Positive absorptive coupling at small grating wave vectors is correlated with the light-induced transparency of the crystal described herein. The intensity and grating wave vector dependence of the electro-optic and absorptive coupling, and the light-induced transparency are consistent with a model incorporating deep and shallow levels.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1063/1.351622