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Efficient multiphoton-absorption-induced luminescence in single-crystalline ZnO at room temperature.

By D.C. Dai, S.J. Xu, S.L. Shi, M.H. Xie and C.M. Che


At room temperature, multiphoton absorption- (MPA-) induced photoluminescence in ZnO strongly driven by a femtosecond (fs) near-infrared laser is studied. Two-photon absorption and three-photon absorption are proved to be responsible for the intense luminescence, when the wavelength of the fs excitation laser is above and below the half-bandgap of ZnO, respectively. Strong MPA absorption in ZnO is unambiguously evidenced by the interferometric autocorrelation measurements of the luminescence signal.\ud \u

Publisher: Optical Society of America
Year: 2005
DOI identifier: 10.1364/OL.30.003377
OAI identifier:

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