Title :
Two-dimensional Bragg-Ewald´s dynamical diffraction and spontaneous gratings
Author :
Lymar, V.I. ; Miloslavsky, V.K. ; Ageev, L.A.
Author_Institution :
Dept. of Phys., Kharkov Nat. Univ., Ukraine
Abstract :
Convincing experimental data about a complex spontaneous grating (SG) structure have been revealed under influence of a laser irradiation on thin waveguide photosensitive films. The main features of SG structures are explained in terms of two-dimensional Bragg-Ewald dynamical diffraction (TDDD). A TDDD model is founded on the well-known Sommerfeld´s treatment of electromagnetic fields generated by a source near an interface as well as the well-known Ewald´s self-consistent principle. TDDD equations turned out to be different in content and form compared to classical Bragg or Rayleigh diffraction on periodical structures
Keywords :
diffraction gratings; laser beam effects; light diffraction; light scattering; 2D Bragg-Ewald´s dynamical diffraction; Ewald self-consistent principle; Sommerfeld´s treatment; complex spontaneous grating structure; electromagnetic fields; laser irradiation; periodical structures; spontaneous gratings; thin waveguide photosensitive films; Bragg gratings; Diffraction gratings; Laser modes; Light scattering; Optical diffraction; Optical scattering; Optical surface waves; Physical optics; Pump lasers; Surface emitting 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.2001.930249
