Abstract
In this study we analyzed the hexagonal symmetry pattern formation connected with build-up process of the spontaneous gratings (SGs) in AgCl-Ag films irradiated by P-polarized laser beam under conditions of competition between TE-and TM-waveguide modes. The experiments were performed with thin AgCl-Ag films prepared by means of successive deposition in vacuum of the AgCl layer. The films were irradiated with a focused P-polarized beam from He-Ne laser. We judge about an origin and development of SGs using patterns of small-angle scattering (or small-angle diffraction (SAD)). The hexagons arise under condition of a strong competition of the TM0- and TE0-modes with /spl beta//sub TE0//spl ne//spl beta//sub TM0/ during formation of SGs. The SAD effect plays an important role in this process.
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