1995•Journal of the Optical Society of America BRequires access

Dynamics of light-induced absorption in BaTiO_3 and application for intensity stabilization

K. Buse, Thomas Bierwirth

Abstract

Illumination of a photorefractive BaTiO3 crystal provides an induced absorption increase, which is explained by the two-center charge transport model. Detailed investigations of buildup and decay of light-induced absorption are performed. Intensity changes of the incoming wave are attenuated by these absorption changes. The requirements for distinct intensity stabilization are theoretically estimated. Intensity stabilization is experimentally demonstrated, and a decrease of the intensity fluctuations of as much as 30% has been achieved.

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Key concepts: Intensity (physics), Absorption (acoustics), Photorefractive effect, Light intensity, Materials science, Crystal (programming language), Optics, Molecular physics