Title :
Nonlinear anisotropic scattering of laser beam in photosensitive thin AS2S3-Ag films
Author :
Ageev, L.A. ; Miloslavsky, V.K. ; Pogrebnyak, M.V. ; Larionova, E.I.
Author_Institution :
Phys. Opt., Karazin (V.N.) Kharkov Nat. Univ., Ukraine
Abstract :
The photosensitivity of thin As2S3-Ag films has been known for a long time. However, the nonlinear optical effects developing in these films at large expositions is poorly investigated. The present work is about the inducing of periodical structures (PS) connected with the excitation of waveguide TE- and TM-modes in the film by a focused linearly-polarized Gaussian laser beam. The origin and development of scattering light bands (SLBs) is an external sign of the PS formation. SLBs represent an example of a spatio-temporal transformation of the laser beam in a nonlinear medium
Keywords :
arsenic compounds; laser beams; light scattering; nonlinear optics; optical films; sensitivity; silver; As2S3-Ag; focused linearly-polarized Gaussian laser beam; laser beam; nonlinear anisotropic scattering; nonlinear medium; nonlinear optical effects; periodical structures; photosensitive thin As2S3-Ag films; scattering light bands; spatio-temporal transformation; waveguide TE-modes; waveguide TM-modes; Anisotropic magnetoresistance; Geometrical optics; Laser beams; Laser excitation; Light scattering; Nonlinear optics; Optical films; Optical scattering; Optical waveguides; Waveguide lasers;
Conference_Titel :
Laser and Fiber-Optical Networks Modeling, 2001. Proceedings of LFNM 2001. 3rd International Workshop on
Conference_Location :
Kharkiv
Print_ISBN :
0-7803-6680-8
DOI :
10.1109/LFNM.2001.930248
