一种新双光子吸收材料PSPI的性能研究

Properties of a new two-photon-absorbed material PSPI

摘要: 合成了一种染料反式-4-对-(吡啶咯烷基)苯乙烯基-N-甲基吡啶盐碘(PSPI)。实验研究了这种新化合物的双光子吸收,双光子吸收引起的频率上转换发射,双光子泵浦的上转换超辐射性质。化合物在1064 nm处具有中等大小的双光子吸收截面σ=5.7×10^-48 cm⁴·s/photon,但具有很高的超辐射效率。当泵浦能量为2.02 mJ时总的转换效率高达16.8%。

Abstract: A new dye Trans-4-p-(pyrrolidinyl)styryl-N-methylpyridinium iodide (PSPI) was synthesized,and the two-photon absorption (TPA),TPA-induced frequency up-convers ion emission,and two-photon pumped (TPP) frequency up-converted superradiation properties of this new dye were experimentally studied.This new dye has a moderate TPA cross-section of σ₂=5.7×10^-48 cm⁴·s/photon at 1064 nm,but exhibits a high superradiation efficiency.The overall conversion efficiency is as high as 16.8% at the pump energy level of 2.02 mJ.