Media type: Electronic Conference Proceeding Title: Yb3+ion cooperative upconversion luminescence of oxyfluoride vitroceramics Contributor: Chen, Xiaobo; Li, Meixian X.; Song, Z. F.; Wang, Guowen; Ying, Z. Charles Published: SPIE, 2002 Published in: SPIE Proceedings (2002) Extent: Language: Not determined DOI: 10.1117/12.461658 ISSN: 0277-786X Origination: Footnote: