Two-photon Upconversion Luminescence of Eu^3＋：Ca2Al2SiO7 Crystal Irradiated by Infrared femtoseeond Laser

Infrared to visible upconversion luminescence was demonstrated in trivalent Europium doped Ca2Al2SiO7 crystal （Eu^3＋：Ca2Al2SiO7） irradiated by focused infrared femtosecond laser. The upconversion luminescence originated from 5D0 to 7Ej （j= 1, 2） transitions of Eu^3＋ The relationship between the upco...

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Veröffentlicht in:	Journal of Wuhan University of Technology. Materials science edition 2007, Vol.22 (B12), p.876-878
1. Verfasser:	WANG Chen QIU Jianrong HU Xiao QIAO Yanbo CHEN Danping ZHU Congshan
Format:	Artikel
Sprache:	eng
Schlagworte:	Eu^3＋：Ca2Al2SiO7晶体光学性能多光子发光红外飞秒激光超快激光
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Zusammenfassung:	Infrared to visible upconversion luminescence was demonstrated in trivalent Europium doped Ca2Al2SiO7 crystal （Eu^3＋：Ca2Al2SiO7） irradiated by focused infrared femtosecond laser. The upconversion luminescence originated from 5D0 to 7Ej （j= 1, 2） transitions of Eu^3＋ 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 Eu^3＋ Analysis suggested that two-photon simultaneous absorption induced population inversion should be the predominant frequency upconversion mechanism.
ISSN:	1000-2413 1993-0437