摘要
为了研究近化学计量比 Ce:Fe:LiNbO_3晶体的非挥发全息存储固定,测试了晶体的光谱特性,发现近化学计量比 Ce:Fe:LiNbO_3晶体较同成分 Ce:Fe:LiNbO_3晶体的红外透射谱变窄,峰值位于3466cm^(-1)处;而紫外光谱发生紫移。并采用单、双光子存储方法进行了理论分析和实验验证。结果表明,单光子照射实验中,用汞灯预照晶体比不用汞灯预照的衍射效率要高;而双光子存储的性能参量明显优于单光子存储的性能参量。
In order to study nonvolatile holographic storage of near-stoichiometric Ce：Fe：LiNbO3 crystal,the spectrum of near-stoichiometric Ce： Fe： LiNbO3 crystal was tested. The results indicated that the infrared transmission spectra of the nearstoichiometric Ce ： Fe ： LiNbO3 crystal was narrower than that of congruent Ce ： Fe ： LiNbO3 crystal, the peak was located at 3466cm^-1, and its ultraviolet spectrum shifted forward to violet. With single-photon and two-photon storage methods, nonvolatile holographic storage of near-stoichiometric Ce： Fe： LiNbO3 crystal was realized in theory and experiment. The results showed that in the single-photon storage experiments, the diffraction efficiency with the presence of mercury lamp became higher than that without mercury lamp. The performance in two-photon storage scheme was better than that in single-photon storage scheme.
出处
《激光技术》
CAS
CSCD
北大核心
2009年第3期287-290,共4页
Laser Technology
关键词
非线性光学
非挥发全息存储
光谱分析
二波耦合
nonlinear optics
nonvolatile holographic storage
spectrum analysis
two-wave coupling
