Author Affiliations
Abstract
1 School of Physical Science and Technology, Southwest University, Chongqing 400715, China
2 School of Primary Education, Chongqing Normal University, Chongqing 400700, China
The broadband photochromic effect on undoped and rare-earth-doped lead lanthanum zirconate titanate (PLZT) ceramics was studied under the illumination of ultraviolet light at 360 nm. The photocarriers’ trapping and detrapping processes of thermal disconnected traps played the vital role in both darkening and bleaching processes. The interaction between photocarrier traps and rare-earth ion energy levels was demonstrated, which influenced the photochromatic darkening performance greatly. The transformation of photoluminescence spectra in Er3+-doped PLZT ceramics also improved the physical picture of the trap’s distribution of the materials. This work could be used to modulate the photoluminescence and lasing behavior.
photochromic effect darkening and bleaching process trapping and detrapping spectrum transformation Chinese Optics Letters
2020, 18(9): 091403
1 中国科学院上海光学精密机械研究所,上海 201800
2 中国科学院上海硅酸盐研究所,上海 200050
在双掺杂(Fe,Mn):LiNbO3晶体光色效应非挥发性全息存储实验中,观测到光束耦合作用导致的自增强和自衰减效应.根据这种自衍射效应,归纳了四种记录和光固定实验组合方案.实验结果表明,在记录和光固定过程中利用自增强效应得到的最高衍射效率为利用自衰减效应得到的衍射效率的两倍左右,说明在实际应用中必须考虑和利用自增强效应.
Mn):LiNbO3晶体 光色效应 光束耦合 自衍射
