The temporary evolution of spontaneous gratings (SG), induced by a linearly polarized single laser beam ((lambda) _r equals 632.8 nm and 441.6 nm) in thin AgCl-Ag films, is studied. It is found that the period of the gratings increases (decreases) as the laser exposition at 632.8 nm (441.6 nm) increases. This effect was explained by a generation of SG on waveguide modes scattered in films and by an existence of a colloidal Ag absorption band at 500 nm in the initial AgCl-Ag films. Percolation effects were found in the dependence of the halfwidth of diffraction reflexes on the exposition.

Date Published: 3 November 1995
PDF: 10 pages
Proc. SPIE 2648, International Conference on Optical Diagnostics of Materials and Devices for Opto-, Micro-, and Quantum Electronics, (3 November 1995); doi: 10.1117/12.226139

Published in SPIE Proceedings Vol. 2648:
International Conference on Optical Diagnostics of Materials and Devices for Opto-, Micro-, and Quantum Electronics
Sergey V. Svechnikov; Mikhail Ya. Valakh, Editor(s)