Holographic Grating Formation in Cationic Photopolymers with Dark Reaction  

作　　者：尉昊赟 曹良才 GU Claire 许振丰 赫明钊 何庆声 何树荣 金国藩 

机构地区：[1]State Key Laboratory of Precision Measurement Technology and Instruments, Tsinghua University, Beijing 100084 [2]Department of Electrical Engineering, University of California, Santa Cruz, CA 95064, USA

出　　处：《Chinese Physics Letters》2006年第11期2960-2963,共4页中国物理快报（英文版）

基　　金：Supported by the State Key Fundamental Research and Development Programme of China under Crant No G1999033001, and the National Natural Science Foundation of China under Grant No 60277011.

摘　　要：We propose a new formula to describe the dynamics of holographic grating formation under low intensity pulse exposures in cationic photopolymers, in which the dark reaction contributes dominantly to the grating strength. The formula is based on the living polymerization mechanism and the diffusion-free approximation. The analytical solution indicates that the grating formation time depends on the termination rate constant, while the final grating strength depends linearly on the total exposure energy. These theoretical predictions are verified experimentally using the Aprilis HMC-400μm photopolymer. The results can provide guidelines for the control and optimization of the holographic recording conditions in practical applications.We propose a new formula to describe the dynamics of holographic grating formation under low intensity pulse exposures in cationic photopolymers, in which the dark reaction contributes dominantly to the grating strength. The formula is based on the living polymerization mechanism and the diffusion-free approximation. The analytical solution indicates that the grating formation time depends on the termination rate constant, while the final grating strength depends linearly on the total exposure energy. These theoretical predictions are verified experimentally using the Aprilis HMC-400μm photopolymer. The results can provide guidelines for the control and optimization of the holographic recording conditions in practical applications.

关 键 词：DATA-STORAGE MODEL 

分 类 号：O438.1[机械工程—光学工程]