一种新双光子吸收材料PSPI的性能研究(英文)

Properties of a new two -photon -abso rbed material PSPI

合成了一种染料反式-4-犤对-(吡啶咯烷基)苯乙烯基犦-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1064nm处具有中等大小的双光子吸收截面σ=5.7×10-48cm4·s/photon,但具有很高的超辐射效率。当泵浦能量为2.02mJ时总的转换效率高达16.8%。

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 superradia tion properties of this new dye were experimentally studied.This new dye has a moderate TPA cross -section ofσ2=5.7×10-48cm4·s /photon at 1064nm,but exhibits a high superradiation efficiency.The overall conversion efficiency is as high as 16.8%at the pump energy level of 2.02mJ.