Nonlinear absorption and upconversion properties of two-photon absorption dye: ASPI

✍ Scribed by Dong Wang; Guangyong Zhou; Xinguang Xu; Xiaomei Wang; Zhiqiang Liu; Yan Ren; Zongshu Shao; Minhua Jiang

• Publisher: Elsevier Science
• Year: 2002
• Tongue: English
• Weight: 101 KB
• Volume: 34
• Category: Article
• ISSN: 0030-3992
• DOI: 10.1016/s0030-3992(01)00094-9

✦ Synopsis

Two-photon absorption (TPA) cross sections of an organic dye, trans-4-[p-(N -hydroxyethyl-N -methylamino) tyryl]-N -methylpyridinium iodide (abbreviated as ASPI), from 720 to 1100 nm have been measured by using nonlinear transmittance method, which re ect the TPA degrees of the dye at di erent wavelengths. The maximum TPA wavelength is located at 930 nm. The upconversion e ciencies of ASPI in dimethyl formamide and benzyl alcohol at di erent pump wavelengths have also been measured. There is 90 nm red shift for the highest upconversion wavelength as comparing with the strongest TPA wavelength. The in uences of the solvents on the TPA-induced emission spectrum and the conversion e ciencies have also been given.