| Original Articles |
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Space-Selective Precipitation of Ba2TiSi2O8 Crystals in Sm3+-Doped BaO--TiO2--SiO2 Glass by Femtosecond Laser Irradiation |
| ZHU Bin1;DAI Ye2;3;MA Hong-Liang2;3;LIN Geng1;QIU Jian-Rong1 |
| 1State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 3100272Instrumental Analysis and Research Center, Shanghai University, Shanghai 2004443Department of Physics, Shanghai University, Shanghai 200444 |
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| Cite this article: |
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ZHU Bin, DAI Ye, MA Hong-Liang et al 2008 Chin. Phys. Lett. 25 133-136 |
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Abstract The ferroelectric crystal Ba2TiSi2O8 with high second-order optical nonlinearity
is precipitated in Sm3+-doped BaO--TiO2--SiO2 glass by a focused 800nm, 250kHz and 150fs femtosecond laser irradiation. No apparent blue and red emissions are observed at the beginning, while strong blue emission due to second harmonic generation and red emission due to the f--f transitions of
Sm3+ are observed near the focal point of the laser beam after irradiation for 25s. Micro-Raman spectra confirm that Ba2TiSi2O8 crystalline dots and lines are formed after laser irradiation. The mechanism of the phenomenon is discussed.
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| Keywords:
42.70.Ce
78.55.-m
81.10.Jt
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Received: 03 July 2007
Published: 27 December 2007
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| PACS: |
42.70.Ce
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(Glasses, quartz)
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78.55.-m
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(Photoluminescence, properties and materials)
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81.10.Jt
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(Growth from solid phases (including multiphase diffusion and recrystallization))
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