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Chin. Phys., 2003, Vol. 12(12): 1386-1389    DOI: 10.1088/1009-1963/12/12/009
ATOMIC AND MOLECULAR PHYSICS Prev   Next  

Femtosecond laser-induced long-lasting phosphorescence in Pr3+-doped ZnO-B2O3-SiO2 glass

Jiang Xiong-Weia, Zeng Hui-Dana, Zhu Cong-Shana, Qiu Jian-Rongb
a Photon Craft Project, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China; b Photon Craft Project, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China; Photon Craft Project, Japan Science and Technology Corporation, SuperLab 205, Keihanna Plaza, Seika-cho, Kyoto 619-0237, Japan
Abstract  This paper studies the phenomenon of long-lasting phosphorescence induced by a femtosecond laser in Pr^{3+}-doped ZnO-B_2O_3-SiO_2 glass. With the glass irradiated by a focused femtosecond laser for a short time, the emission of strong reddish long-lasting phosphorescence from the irradiated part of the glass can be observed. The emission peaks are located at 495 and 603 nm in wavelength, showing that the long-lasting phosphorescence originates from the emission of Pr^{3+}. The intensity of the phosphorescence decreases in inverse proportion to time after the removal of the laser. By analysing the absorption and electron spin resonance spectra of the glass, we find that colour-centres are induced in the glass matrix after the irradiation of the femtosecond laser. A possible mechanism has been provided to account for the generation of long-lasting phosphorescence.
Keywords:  long-lasting phosphorescence      Pr^{3+}      femtosecond laser  
Received:  03 December 2002      Revised:  07 April 2003      Accepted manuscript online: 
PACS:  42.65.Re (Ultrafast processes; optical pulse generation and pulse compression)  
  61.43.Fs (Glasses)  
  61.72.Ji  
  71.55.Jv (Disordered structures; amorphous and glassy solids)  
  76.30.Mi (Color centers and other defects)  
  61.80.Ba (Ultraviolet, visible, and infrared radiation effects (including laser radiation))  
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos 50125258 and 50072037).

Cite this article: 

Jiang Xiong-Wei, Zeng Hui-Dan, Zhu Cong-Shan, Qiu Jian-Rong Femtosecond laser-induced long-lasting phosphorescence in Pr3+-doped ZnO-B2O3-SiO2 glass 2003 Chin. Phys. 12 1386

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