title: Investigation on mechanism of multiple holographic recording with uniform diffraction efficiency in photopolymers.
abstract: 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.
authors: College of Applied Science, Beijing University of Technology, Beijing, China.
authors: Qianli
authors: Q
authors: Zhai
authors: Shiquan
authors: S
authors: Tao
authors: Tao
authors: T
authors: Zhang
authors: Xiaoyang
authors: X
authors: Song
authors: Dayong
authors: D
authors: Wang
mesh_terms: D003198:Computer Simulation; D004867:Equipment Design; D006696:Holography / Q000379:methods*; D008027:Light; D008422:Materials Testing; D055095:Optics and Photonics; D011108:Polymers / Q000737:chemistry*; D012031:Refractometry
chemical_list: D011108:Polymers