【摘要】 通过对两种新型有机染料上转换材料CEASPCe与CEASPI的测试,研究了它们的双光子吸收、频率上转换特性实验利用930nm的红外激光泵浦两种染料溶液可得到610nm左右的上转换荧光.当提高浓度时,会得到方向性好、强度高、窄线宽的放大自发辐射(ASE)通过对两种染料双光子光谱及上转换效率的比较,考察稀土离子对于有机物双光子上转换过程的影响更多还原

【Abstract】 Two-photon absorpuion and frequency upconversion properties of CEASP-Ce and CEASPI dye solutions have been measured. The upconversion fluorescence was measured to be around 610 nm when the two dyes were pumped with 930 nm laser. A good directional, high efficiency, narrow spectral width amplified spontaneous emission(ASE)could been observed when the concentration of the dyes were increased. The output verse input efficiency of the two dyes was different, but the overall net upconversion of them pumped by 975 nm laser reached about 20%. A comparison was made between the two samples though their different parameters, a result can be concluded from the structure of two samples that Ce~3+ affects the process of ASE by enhancing the absorption cross section.更多还原