Formation of the patterns of hexagonal symmetry in thin photosensitive films

Author

Miloslavsky, V.K. ; Bondarenko, O.V. ; Ageev, L.A.

Author_Institution

Dept. of Phys., V.N. Karazin Kharkov Nat. Univ., Ukraine

fYear

2003

fDate

19-20 Sept. 2003

Firstpage

109

Lastpage

112

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 β_TE0≠β_TM0 during formation of SGs. The SAD effect plays an important role in this process.

Keywords

diffraction gratings; gas lasers; helium; laser beam applications; light diffraction; light scattering; metallic thin films; neon; optical waveguides; pattern formation; photochemistry; silver; silver compounds; AgCl-Ag; AgCl-Ag films; He-Ne; He-Ne laser; P-polarized laser beam irradiation; TE-waveguide mode; TM-waveguide mode; hexagonal symmetry; pattern formation; small-angle diffraction; small-angle scattering; spontaneous gratings; thin photosensitive films; Bonding; Diffraction; Gratings; Interference; Laser beams; Laser excitation; Laser modes; Light scattering; Physics; Rayleigh scattering;

fLanguage

English

Publisher

ieee

Conference_Titel

Laser and Fiber-Optical Networks Modeling, 2003. Proceedings of LFNM 2003. 5th International Workshop on

Print_ISBN

0-7803-7709-5

Type

conf

DOI

10.1109/LFNM.2003.1246092

Filename

1246092