Two-photon Upconversion Luminescence of Eu3+:Ca2Al2SiO7 Crystal Irradiated by Infrared femtosecond Laser
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2007年第S1期
论文作者：汪晨 邱建荣
文章页码：876 - 878
摘 要：<正>Infrared to visible upconversion luminescence was demonstrated in trivalent Europium doped Ca2Al2SiO7 crystal (Eu3+:Ca2Al2SiO7) irradiated by focused infrared femtosecond laser.The upconversion luminescence originated from 5D0 to 7Fj （j=1,2） transitions of Eu3+.The relationship between the upconversion luminescence intensity and the pump power indicated that the upconversion from near-infrared to red is dominated by a two-photon absorption process of Eu3+.Analysis suggested that two-photon simultaneous absorption induced population inversion should be the predominant frequency upconversion mechanism.
汪晨，邱建荣
摘 要：<正>Infrared to visible upconversion luminescence was demonstrated in trivalent Europium doped Ca2Al2SiO7 crystal (Eu3+:Ca2Al2SiO7) irradiated by focused infrared femtosecond laser.The upconversion luminescence originated from 5D0 to 7Fj （j=1,2） transitions of Eu3+.The relationship between the upconversion luminescence intensity and the pump power indicated that the upconversion from near-infrared to red is dominated by a two-photon absorption process of Eu3+.Analysis suggested that two-photon simultaneous absorption induced population inversion should be the predominant frequency upconversion mechanism.
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