Polarization-dependent photoinduced mechanical deformations in covalent chalcogenide glasses

Abstract

The optomechanical effect and photoinduced anisotropic deformation induced by illumination of linearly polarized light have been comparatively studied for glassy As2 S3 and Se films. The two materials show qualitatively the same behaviors in the mechanical effect and the deformation, which suggests that these photoinduced phenomena are inherent to the covalent chalcogenide glass. But, the two phenomena show different dependences upon intensity, spectrum and exposure time of excitation light, which imply different underlying mechanisms. © 2007 American Institute of Physics.