Two-dimensional Bragg-Ewald's dynamical diffraction and spontaneous gratings

Two-dimensional Bragg-Ewald's dynamical diffraction and spontaneous gratings

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 T...

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Bibliographische Detailangaben
Hauptverfasser: Lymar, V.I., Miloslavsky, V.K., Ageev, L.A.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Bragg gratings
Diffraction gratings
Laser modes
Light scattering
Optical diffraction
Optical scattering
Optical surface waves
Physical optics
Pump lasers
Surface emitting lasers
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Beschreibung
Zusammenfassung: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.
DOI:10.1109/LFNM.2001.930249