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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 19, Iss. 5 — May. 1, 2002
  • pp: 1141–1144

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

Guang-Yong Zhou, Dong Wang, Xiao-Qiang Yu, Yan Ren, Xin-Guang Xu, Xiu-Feng Cheng, Zong-Shu Shao, and Min-Hua Jiang  »View Author Affiliations


JOSA B, Vol. 19, Issue 5, pp. 1141-1144 (2002)
http://dx.doi.org/10.1364/JOSAB.19.001141


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Abstract

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-N-ethylamino)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.

© 2002 Optical Society of America

OCIS Codes
(160.4330) Materials : Nonlinear optical materials
(160.5470) Materials : Polymers
(190.4180) Nonlinear optics : Multiphoton processes
(190.4710) Nonlinear optics : Optical nonlinearities in organic materials

Citation
Guang-Yong Zhou, Dong Wang, Xiao-Qiang Yu, Yan Ren, Xin-Guang Xu, Xiu-Feng Cheng, Zong-Shu Shao, and Min-Hua Jiang, "Two-photon-absorption and upconverted superradiance properties of organic dye HEASPS-doped linear homogeneous polymer at several wavelengths," J. Opt. Soc. Am. B 19, 1141-1144 (2002)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-19-5-1141


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