Studies of two-photon pumped frequency-upconverted lasing properties of a new dye material

被引:158
作者
He, GS
Yuan, LX
Cui, YP
Li, M
Prasad, PN
机构
[1] Photonics Research Laboratory, Department of Chemistry, State Univ. of New York at Buffalo, Buffalo
关键词
D O I
10.1063/1.364303
中图分类号
O59 [应用物理学];
学科分类号
摘要
The two-photon absorption (TPA), TPA-induced frequency upconversion emission, and two-photon-pumped (TPP) lasing properties of a new dye, trans-4[p-(N-hydroxyethyl-N-methylamino)stryryl]-N- methylpyridinium iodide (abbreviated as ASPI) were experimentally investigated. This new dye has a moderate TPA cross section (sigma(2) approximate to 3.9X20(-20), cm(4)/GW in benzyl alcohol), but exhibits a low lasing threshold and high lasing efficiency when pumped with a 1064 nm pulsed laser beam. Furthermore, the TPA-induced fluorescence yield is strongly dependent on the polarity of the solvent, making it a promising dye for sensing applications. The spectral, temporal, and spatial structures as well as the output/input characteristics of the TPP cavity lasing and the superradiant (cavityless) lasing are systematically measured using a 1 cm path quartz cuvette filled with the ASPI solution or a doped polymer rod. The net conversion efficiency from the absorbed 1064 nm pump pulse energy to the similar to 615 nm upconverted cavity lasing energy was found to be as high as similar to 17%. (C) 1997 American Institute of Physics.
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收藏
页码:2529 / 2537
页数:9
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