Improvement of sensitivity and refractive-index changes in LiNbO3 : Ce : Cu crystals with UV light


Autoria(s): 戴翠霞; 刘立人; 刘德安; 柴志方; 周煜
Data(s)

2006

Resumo

A nonvolatile recording scheme is proposed using LiNbO3:Ce:Cu crystals and modulated UV light to record gratings simultaneously in two centres and using red light to bleach the grating in the shallow centre to realize persistent photorefractive holographic storage. Compared with the normal UV-sensitized nonvolatile holographic system, the amplitude of refractive-index changes is greatly increased and the recording sensitivity is significantly enhanced by recording with UV light in the LiNbO3:Ce:Cu crystals. Based on jointly solving the two-centre material equations and the coupled-wave equations, temporal evolutions of the photorefractive grating and the diffraction effciency are effectively described and numerically analysed. Roles of doping levels and recording-beam intensity are discussed in detail. Theoretical results confirm and predict experimental results.

Identificador

http://ir.siom.ac.cn/handle/181231/1744

http://www.irgrid.ac.cn/handle/1471x/10397

Idioma(s)

英语

Fonte

戴翠霞;刘立人;刘德安;柴志方;周煜.,J. Mod. Opt.,2006,53(7):907-918

Palavras-Chave #NONVOLATILE HOLOGRAPHIC STORAGE #LITHIUM-NIOBATE #LINBO3-FE-MN #PHOTOREFRACTION #DIFFRACTION #ULTRAVIOLET
Tipo

期刊论文