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Proceedings Paper

Transmission, reflection, and absorption gratings in photorefractive polymers
Author(s): Partha P. Banerjee; Gary Cook; Dean R. Evans; J. Wofford; P.-A. Blanche; J. Thomas; N. Peyghambarian
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Paper Abstract

Two-beam coupling (TBC) in a photorefractive polymer using transmission and reflection geometries is investigated. With drift (due to an applied electric field) and diffusion, a linearized analysis suggests a phase shift between the intensity grating and the induced refractive index grating different from the ideal value of 90 degrees, which is supported by experimental results using a transmission grating geometry. In a self-pumped reflection grating geometry, which is also experimentally studied, the phase shift can be closer to 90 degrees due to a shorter grating period. Absorption and absorption gratings during TBC is also experimentally investigated.

Paper Details

Date Published: 21 August 2009
PDF: 9 pages
Proc. SPIE 7420, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications III, 74200H (21 August 2009); doi: 10.1117/12.826999
Show Author Affiliations
Partha P. Banerjee, Air Force Research Lab. (United States)
Univ. of Dayton (United States)
Gary Cook, Air Force Research Lab. (United States)
Universal Technology Corp. (United States)
Dean R. Evans, Air Force Research Lab. (United States)
J. Wofford, Air Force Research Lab. (United States)
Southern Ohio Council for Higher Education (United States)
P.-A. Blanche, College of Optical Sciences, The Univ. of Arizona (United States)
J. Thomas, College of Optical Sciences, The Univ. of Arizona (United States)
N. Peyghambarian, College of Optical Sciences, The Univ. of Arizona (United States)


Published in SPIE Proceedings Vol. 7420:
Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications III
Shizhuo Yin; Ruyan Guo, Editor(s)

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