Temporal and spectral behaviors of two-photon induced emission laser dyes

Lei, Hong; Wang, H.Z; Ren, Yan; Fang, Qi; Zheng, Xiaoyuan; Wei, Zigen; Xu, Naitao; Jiang, Minhua

doi:10.1016/s0030-4018(00)01107-x

Cited by 6 publications

(2 citation statements)

References 12 publications

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“…An organic dye, trans-4- [ p-(N-hydroxyethyl-N-ethylamino)styryl]-N-methylpyridinium p-toluene sulfonate (HEASPS) was synthesized recently, its optical properties in solution were reported. 8,9 The spectral and temporal properties of TPA-induced fluorescence and superradiance as well as the two-photon transmittance and upconversion efficiencies at several wavelengths are reported in this paper.…”

Section: Introductionmentioning

confidence: 92%

“…The lifetimes of single-and two-photon fluorescence of HEASPS in polymer are much longer than in dimethyl formamide. 9 The lifetimes are only approximately 86 and 65 ps for single-and two-photon fluorescence, respectively. The long lifetime of HEASPS in polymer is due to the much smaller collision between dye molecules as well as between the dye and the polymer molecules.…”

Section: A Spectral Propertiesmentioning

confidence: 99%

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Two-photon-absorption and upconverted superradiance properties of organic dye HEASPS-doped linear homogeneous polymer at several wavelengths

Zhou

Wang

et al. 2002

J. Opt. Soc. Am. B

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The spectral and temporal properties of single-and two-photon fluorescence of a dye-doped linear homogeneous polymer are reported. The dopant is a new organic dye, trans-4-[ p-(N-hydroxyethyl-Nethylamino)styryl]-N-methylpyridinium p-toluene sulfonate (HEASPS), synthesized by researchers at the State Key Laboratory, Jinan China. When the dye is excited by near-infrared laser radiation, strong upcoverted fluorescence and superradiance can be observed. The difference in the blueshift of two-photon superradiance compared with that of two-photon fluorescence is explained by the use of different reabsorption coefficients under different conditions. The lifetime of two-photon fluorescence in a solid was measured to be 4.14 ns, which was much longer than that in solution. Two-photon transmittance and upconversion efficiencies at different wavelengths were measured with an optical parameter amplifier as the pump source. The strongest two-photon absorption occurred at 930 nm. The highest upconversion efficiency was 4.05% at 1030 nm. A possible mechanism is discussed.

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Section: Introductionmentioning

confidence: 92%

Section: A Spectral Propertiesmentioning

confidence: 99%

Two-photon-absorption and upconverted superradiance properties of organic dye HEASPS-doped linear homogeneous polymer at several wavelengths

Zhou

Wang

et al. 2002

J. Opt. Soc. Am. B

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Synthesis, Characterization and Two‐Photon Absorption Properties of a Novel Pyridinium Salt

et al. 2004

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A novel pyridinium salt, 2,4-bis[p-(N~-dimethy~o)s~l]-N-methyl pyridiniUm iodide (BMSPI) was synthesized and characterized by TG, 'H NMR spectroscopy and elemental analysis. and the reaction process was studied by Using ES-MS. When BMSPI was pumped by a pulsed 1064 nm, 50 ps laser h i m . it manifests highly efficient TPA (Two-Photon Absorption) and upconversion supemdmce. The upconversion efficiency was 6.0% at the pump energy of 4 -6 mT and the Lifetime of two-photon fluorescence was measured as 59 ps.

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