Title :
A new UV laser media: Tb3+ and Yb3+ codoped oxyfluoride glass-ceramic containing CaF2 nanocrystals
Author :
Huang, Lihui ; Yamashita, Tatsuya ; Jose, Rajan ; Arai, Yusuke ; Suzuki, Takenobu ; Ohishi, Yasutake
Author_Institution :
Toyota Technol. Inst., Nagoya
Abstract :
A transparent Tb3+ and Yb3+ codoped oxyfluoride glass-ceramic containing CaF2 nanocrystals was prepared through thermal treatment to develop UV laser media. The visible emission spectra of the as-made glass and the glass-ceramic with the excitation of a 374 mW 974 nm diode laser are obtained. The intense emission at 381 nm could be attributed to the change of the ligand field of Tb3+ and Yb3+ ions because of the incorporation of some Tb3+ and Yb3+ ions into CaF2 nanocrystals and the enhanced fluorescence branching ratio of this emission in the glass-ceramic. The results indicate the Tb3+ and Yb3+ codoped oxyfluoride glass ceramic is a promising material for UV solid state laser or fiber laser.
Keywords :
calcium compounds; fluorescence; glass ceramics; heat treatment; optical materials; solid lasers; terbium; transparency; ytterbium; JkOF:Tb,YB-CaF; UV laser media; UV solid state laser; diode laser excitation; fiber laser; fluorescence branching ratio; ligand field; nanocrystals; power 374 mW; thermal treatment; transparent codoped oxyfluoride glass-ceramic; visible emission spectra; wavelength 381 nm; wavelength 974 nm; Ceramics; Chemical industry; Chemical lasers; Chemical technology; Fluorescence; Glass; Laser excitation; Laser stability; Nanocrystals; Optical materials;
Conference_Titel :
Lasers and Electro-Optics, 2007 and the International Quantum Electronics Conference. CLEOE-IQEC 2007. European Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-0931-0
Electronic_ISBN :
978-1-4244-0931-0
DOI :
10.1109/CLEOE-IQEC.2007.4386189
