Simultaneous three-photon-excited violet upconversion luminescence of Ce3+:Lu2Si2O7 single crystals by femtosecond laser irradiation

We found that Ce3+:Lu2Si2O7 single crystals could be excited at 800 nm by using a femtosecond Ti:sapphire laser. The emission spectra of Ce3+:Lu2Si2O7 crystals were the same for one-photon excitation at 267 nm as for excitation at 800 nm. The emission intensity of Ce3+:Lu2Si2O7 crystals was found to...

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Published inOptics letters Vol. 31; no. 14; p. 2175
Main Authors Dong, Yongjun, Xu, Jun, Zhao, Guangjun, Yan, Chenfeng, Zhou, Guoqing, Su, Liangbi, Yang, Luyun, Qiu, Jianrong, Lin, Lihuang, Liang, Xiaoyan, Li, Ruxin, Xu, Zhizhan, Ren, Qiushi
Format Journal Article
LanguageEnglish
Published United States 15.07.2006
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Summary:We found that Ce3+:Lu2Si2O7 single crystals could be excited at 800 nm by using a femtosecond Ti:sapphire laser. The emission spectra of Ce3+:Lu2Si2O7 crystals were the same for one-photon excitation at 267 nm as for excitation at 800 nm. The emission intensity of Ce3+:Lu2Si2O7 crystals was found to depend on the cube of the laser power at 800 nm, consistent with simultaneous absorption of three 800 nm photons. The measured value of the three-photon absorption cross section is sigma'3=2.44x10(-77) cm6 s2.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.31.002175