Simultaneous three-photon-excited violet upconversion luminescence of Ce^3+:Lu_2Si_2O_7 single crystals by femtosecond laser irradiation
2007 ◽
Vol 442
(4-6)
◽
pp. 492-495
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2006 ◽
Vol 24
(6)
◽
pp. 754-756
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