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Optics Letters

Optics Letters


  • Vol. 20, Iss. 3 — Feb. 1, 1995
  • pp: 255–257

Excited-state enhancement of the third-order nonlinear optical susceptibility of nonether polyphenylquinoxaline

Jun Yan, Jianyao Wu, Heyuan Zhu, Xiaotian Zhang, Diechi Sun, Yimei Hu, Fuming Li, and Meng Sun  »View Author Affiliations

Optics Letters, Vol. 20, Issue 3, pp. 255-257 (1995)

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The microscopic third-order nonlinear-optical susceptibility γ(− ω, ω, ω, − ω) of a conjugated polymer, nonether polyphenylquinoxaline, was observed to be enhanced by two times from 355-nm optically pumped excited-state populations under the condition of unsaturated pumping. We studied the time evolution of the enhancement and verified by a fluorescence measurement that the excited-state enhancement of γ(− ω, ω, ω, − ω) is proportional to the population of the excited state.

© 1995 Optical Society of America

Original Manuscript: July 25, 1994
Published: February 1, 1995

Jun Yan, Meng Sun, Jianyao Wu, Heyuan Zhu, Xiaotian Zhang, Diechi Sun, Yimei Hu, and Fuming Li, "Excited-state enhancement of the third-order nonlinear optical susceptibility of nonether polyphenylquinoxaline," Opt. Lett. 20, 255-257 (1995)

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