报道了基于非临界相位匹配磷酸钛氧铷晶体(RTP)的光参量振荡激光性能研究。采用激光二极管端面抽运Nd:YAP激光晶体,组成内腔式RTP-OPO系统,对比了在不同声光调Q重复频率下的信号光输出特性。在20 k Hz重复频率和13.1 W的抽运入射功率下...报道了基于非临界相位匹配磷酸钛氧铷晶体(RTP)的光参量振荡激光性能研究。采用激光二极管端面抽运Nd:YAP激光晶体,组成内腔式RTP-OPO系统,对比了在不同声光调Q重复频率下的信号光输出特性。在20 k Hz重复频率和13.1 W的抽运入射功率下,获得平均功率1.1 W的1.65μm人眼安全激光的输出,光-光转化效率为8.4%;在重复频率为5 k Hz时,获得了最窄脉4.4 ns,最高单脉冲峰值功率30.8 k W。结果表明,基于RTP晶体的OPO变频是获得1.6μm波段激光的一种有效新途径。展开更多
设计了激光二极管侧面泵浦两级放大电光调Q全固态Nd∶YAG激光器,实现间距可调的脉冲序列激光输出。使用U型封装的LD模块对晶体棒进行侧面泵浦,磷酸钛氧铷（RTP）晶体作为调Q晶体,通过提供调Q高压序列,获得了单个脉冲能量大于550 m J,脉...设计了激光二极管侧面泵浦两级放大电光调Q全固态Nd∶YAG激光器,实现间距可调的脉冲序列激光输出。使用U型封装的LD模块对晶体棒进行侧面泵浦,磷酸钛氧铷（RTP）晶体作为调Q晶体,通过提供调Q高压序列,获得了单个脉冲能量大于550 m J,脉冲宽度小于8 ns,脉冲间隔180~240μs可调的脉冲序列输出,脉冲序列间隔稳定,能量保持一致,激光器重复频率5 Hz。展开更多
Molecular materials exhibiting room temperature phosphorescence(RTP) have received much attention during last few years. It has been known that different stacking fashions(e.g., formation of polymorph) and aggregation...Molecular materials exhibiting room temperature phosphorescence(RTP) have received much attention during last few years. It has been known that different stacking fashions(e.g., formation of polymorph) and aggregation/crystal states could largely influence the RTP efficiency. However, whether the crystal morphology or shape could play a key role in modulation of the RTP has not been detected yet. In this work, we report that the dibenzothiophene(DBT) with the same molecular stacking fashion but different crystal morphologies can present alternated RTP performances. By modulation of the fluorescence and phosphorescence dual emission, a direct warm-white color light-emitting has also been successfully achieved. Moreover, the RTP emission can be further tuned through hybridization with β-cyclodextrin in different ratios, with the longest lifetime of 0.43 s.展开更多
文摘报道了基于非临界相位匹配磷酸钛氧铷晶体(RTP)的光参量振荡激光性能研究。采用激光二极管端面抽运Nd:YAP激光晶体,组成内腔式RTP-OPO系统,对比了在不同声光调Q重复频率下的信号光输出特性。在20 k Hz重复频率和13.1 W的抽运入射功率下,获得平均功率1.1 W的1.65μm人眼安全激光的输出,光-光转化效率为8.4%;在重复频率为5 k Hz时,获得了最窄脉4.4 ns,最高单脉冲峰值功率30.8 k W。结果表明,基于RTP晶体的OPO变频是获得1.6μm波段激光的一种有效新途径。
文摘设计了激光二极管侧面泵浦两级放大电光调Q全固态Nd∶YAG激光器,实现间距可调的脉冲序列激光输出。使用U型封装的LD模块对晶体棒进行侧面泵浦,磷酸钛氧铷（RTP）晶体作为调Q晶体,通过提供调Q高压序列,获得了单个脉冲能量大于550 m J,脉冲宽度小于8 ns,脉冲间隔180~240μs可调的脉冲序列输出,脉冲序列间隔稳定,能量保持一致,激光器重复频率5 Hz。
基金supported by the National Basic Research Program(2014CB932103)the National Natural Science Foundation of China(21301016,21473013)+1 种基金the Beijing Municipal Natural Science Foundation(2152016)the Fundamental Research Funds for the Central Universities
文摘Molecular materials exhibiting room temperature phosphorescence(RTP) have received much attention during last few years. It has been known that different stacking fashions(e.g., formation of polymorph) and aggregation/crystal states could largely influence the RTP efficiency. However, whether the crystal morphology or shape could play a key role in modulation of the RTP has not been detected yet. In this work, we report that the dibenzothiophene(DBT) with the same molecular stacking fashion but different crystal morphologies can present alternated RTP performances. By modulation of the fluorescence and phosphorescence dual emission, a direct warm-white color light-emitting has also been successfully achieved. Moreover, the RTP emission can be further tuned through hybridization with β-cyclodextrin in different ratios, with the longest lifetime of 0.43 s.
