Co-doping Effects on the Blue Up-conversion Characteristics of Fluoride Glasses

,; ,

J. Korean Ceram. Soc. > Volume 37(1); 2000 > Article

Journal of the Korean Ceramic Society 2000;37(1): 33.

희토류 원소의 복합첨가에 의한 fluride 유리에서의 청색 상향전이현상

류선윤

선문대학교 재료·금속공학부

Co-doping Effects on the Blue Up-conversion Characteristics of Fluoride Glasses

ABSTRACT

Up-conversion of rare-earth element added glass is promising area for short wavelength laser source by utilizing high power semiconductor infra-red laser if the efficiency can be increased by proper method. In this study, relatively low phonon energy fluoride glasses were prepared by co-doping rare-earth elements to realize the high efficiency up-convertor. The physical, chemical, andoptical properties of co-doped fluoride glasses were measured. 10 combinations of 5 different rare-earth fluoride elements doped samples were prepared and their transition temperatures, chemical durability, density, hardness, refractive index, absorption, fluorescence, and fluorescence lifetime were measured. 480nm wavelengths blue up-conversion was found in the Yb3+/Tm3+ co-doped glass sample with 800nm laser source and the optimum composition for the most efficient blue up-conversion was found from the glass sample with 0.3 mol% TmF3 and 1 mol% YbF3.

Key words: Fluoride Glass, Fluorescence, Up-conversion, Rare-earth element, Co-doping