Open AccessInvestigation on mechanism of multiple holographic recording with uniform diffraction efficiency in photopolymers
Author(s) -
Qianli Zhai,
Shiquan Tao,
Tao Zhang,
X. Song,
Dayong Wang
Publication year - 2009
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.010871
Subject(s) - diffraction efficiency , optics , holography , multiplexing , grating , diffraction grating , diffraction , refractive index , holographic grating , materials science , optoelectronics , computer science , physics , telecommunications
In this paper, our simplified model for grating formation in photopolymers is extended to describe the effects of uniform post-exposure on an existing hologram, and further to present a new model of holographic multiplexing for calculating the exposure schedule for multiplexed gratings with uniform diffraction efficiency. It is experimentally verified that the refractive-index modulation of the existing gratings continues to increase when a current grating is being recorded. Twenty gratings were multiplexed using the exposure schedule calculated with the uniform post-exposure model, and comparison with the result from traditional method confirmed the validity of this model.