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 中国科学院物理研究所光物理实验室 北京 100080
2 中国科学院安徽光机所 合肥 230031
研究了用有机染料进行抽运光光谱转移提高抽运效率的可能性。氙灯脉冲宽度从181 μs降到118 μs，激光输出斜效率提高了17%。采用R-640染料光谱转移实现光谱匹配，斜效率提高了10%，采用120 μs的脉冲抽运光及用有机染料R-640对氙灯抽运光进行光谱转移，抽运Cr3+浓度为5(at-%),尺寸为φ6 mm×45 mm的Cr3+:LiSAF6激光晶体，中心波长为830 nm，获得1 J的激光能量输出。
氙灯抽运 光谱转移
