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RISS 인기검색어
- 검색키워드
- 저자 : Zhisong Xiao (검색결과 3 건)
- 무료
- 기관 내 무료
- 유료
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Visible Luminescence of Tm3+, Er3+ and Yb3+ in Calcium-Aluminoborate Glasses
Zhisong Xiao,Lu Yan,Fang Zhu,Anping Huang 한국물리학회 2009 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.55 No.6
Tm, Er, and Yb codoped calcium-aluminoborate glasses were prepared. Intense visible luminescence was observed under excitation at a 325-nm wavelength. It was demonstrated that violet and blue luminescences (392, 454 and 478 nm) were mainly contributed by Tm3+, and green (514, 528 and 559 nm) and red (652 nm) luminescences were mainly contributed by Er3+. Energy transfer processes among Tm3+, Er3+, and Yb3+ were evidenced, in which various colors of the luminescence could be easily tuned by adjusting the concentration and the kind of the rare earth ions in glasses. Tm, Er, and Yb codoped calcium-aluminoborate glasses were prepared. Intense visible luminescence was observed under excitation at a 325-nm wavelength. It was demonstrated that violet and blue luminescences (392, 454 and 478 nm) were mainly contributed by Tm3+, and green (514, 528 and 559 nm) and red (652 nm) luminescences were mainly contributed by Er3+. Energy transfer processes among Tm3+, Er3+, and Yb3+ were evidenced, in which various colors of the luminescence could be easily tuned by adjusting the concentration and the kind of the rare earth ions in glasses.
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Optical Properties of Tm-Er Codoped Aluminate Glasses
Zhisong Xiao,Lu Yan,Bo Zhou,Fang Zhu,Anping Huang,Jinliang Wang,Yongchang Zhu 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.52 No.-
Transparent CaO-Al₂O₃-B₂O₃ glasses codoped with Tm³+ and Er³+ were prepared by melt quenching and subsequent heating. Optical absorption spectra revealed an ultraviolet to visible absorption band corresponding to a relative electronic transition of Tm3+ and Er³+. For Tm-only doped glasses, the 791-nm absorption line is prominent and also has comparable strength in Tm-Er codoped glasses. Both 405-nm and 791-nm wavelengths have been used as excitation sources to comparatively study the photoluminescence characteristics of Tm3+ and Er3+. Only Er3+ emission at 1528 nm has been observed under a pumping wavelength of 405 nm. However, both Tm3+ and Er³+ emission can be found with an excitation wavelength of 791 nm. It implies that 791 nm should be very effective for pumping Tm-Er codoped aluminate glass for application in broadband optical waveguide amplifiers. Transparent CaO-Al₂O₃-B₂O₃ glasses codoped with Tm³+ and Er³+ were prepared by melt quenching and subsequent heating. Optical absorption spectra revealed an ultraviolet to visible absorption band corresponding to a relative electronic transition of Tm3+ and Er³+. For Tm-only doped glasses, the 791-nm absorption line is prominent and also has comparable strength in Tm-Er codoped glasses. Both 405-nm and 791-nm wavelengths have been used as excitation sources to comparatively study the photoluminescence characteristics of Tm3+ and Er3+. Only Er3+ emission at 1528 nm has been observed under a pumping wavelength of 405 nm. However, both Tm3+ and Er³+ emission can be found with an excitation wavelength of 791 nm. It implies that 791 nm should be very effective for pumping Tm-Er codoped aluminate glass for application in broadband optical waveguide amplifiers.
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Photoluminescence from SiGe NPs: SiO_2 Thin Films Co-doped with Al
Kun Zhong,Guoan Cheng,Xiangqian Cheng,Ruiting Zheng,Zhisong Xiao 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.58 No.41
Different doses of Al atoms were implanted into SiGe-rich SiO2 thin films, and the impacts of the doping dose and the annealing temperature on the photoluminescence (PL) from these thin films were investigated. Al-doping promoted the nucleation of SiGe nanoparticles (NPs). The addition of Al enhanced the PL intensity owing to an increase in the number of nucleation sites. However, the Al impurity generated a deep recombination level in the band gap of the SiGe NPs. When the Al-doping dose was 6 X 10^(14) cm^(−2), the intensity of the PL reached a maximum.
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