Abstract
The spectral and temporal properties of the two-photon absorption (TPA) fluorescence, amplified spontaneous emission (ASE) and cavity lasing of a new organic dye, trans-4-[p-(N-n-butyl-N-n-butylamino)-styryl]-N-methyl-pyridinium tris(thiocyanato)cadmates(II), in chloroform have been reported in this paper. The spectral modulation effect was observed in the TPA cavity lasing due to the multicavity structure of the cuvette. Obvious oscillations were observed in the temporal spectrum of the TPA cavity lasing with a total oscillation time of 200 ps. The lifetime of TPA fluorescence was measured to be 248 ps. The upconversion efficiencies of the TPA ASE of the dye in dimethyl formamide (DMF) at different pump energies were measured and the highest efficiency was ≈4.8% at a pump energy of 4–6 mJ.
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