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Proceedings Paper

Optical channeling for radial holographic grating recording in chalcogenide glassy semiconductors films and photo-thermo-plastic films
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Paper Abstract

We discuss phenomena of the optical photons and charged particle channeling in the periodic structures. While particle (as protons) channeling is widely used for the characterization of defects in crystals, channeling of photons is less known. We have demonstrated feasibility of optical channeling method for copying of phase radial grating on the chalcogenide semiconductor glass film and photo-thermoplastic films (PTPF). Chalcogenide glassy semiconductors (CGS) as a medium for recording of optical information have some advantages such as the possibility of achieving a higher resolution power, stability, and a high photosensitivity. We report about recording of the radial phase grating in the doped As-S-Se (CGS). Radial grating was recorded by making copy from the master phase grating placed in the near-field zone and exposure to the CW green (λ=532 nm) low power (P=100 mW) solid-state laser or incoherent UV source. The exposure time has been varied from 15 to 30 min. The recording process could be explained by optical channeling. This phenomenon gives us an opportunity to create phase radial grating using coherent and incoherent illumination.

Paper Details

Date Published: 21 September 2005
PDF: 9 pages
Proc. SPIE 5912, Operational Characteristics and Crystal Growth of Nonlinear Optical Materials II, 591209 (21 September 2005); doi: 10.1117/12.614173
Show Author Affiliations
N. Kukhtarev, Alabama A&M Univ. (United States)
T. Kukhtareva, Alabama A&M Univ. (United States)
S. Bairavarasu, Alabama A&M Univ. (United States)
V. Edwards, Alabama A&M Univ. (United States)
J. Wang, Alabama A&M Univ. (United States)
V. Rotaru, Moldova State Univ. (Moldova)
P. Buchhave, DTU (Denmark)


Published in SPIE Proceedings Vol. 5912:
Operational Characteristics and Crystal Growth of Nonlinear Optical Materials II
Ravindra B. Lal; Donald O. Frazier, Editor(s)

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