화학공학소재연구정보센터
Journal of the American Ceramic Society, Vol.103, No.3, 1782-1788, 2020
Broadband light emission induced by laser absorption and optimized by thermal injection in Nd3+:Y2SiO5 ceramic powder
Laser-induced broadband (white) light emission has been studied in different particle systems for use in light-emitting devices. The photoinduced phenomenon occurs above a certain excitation power threshold and it is generally studied under vacuum conditions. In this work, the phenomenon is studied in neodymium-doped yttrium silicate ceramic powder synthesized by combustion method. White light is observed when the sample is excited in ambient air with a continuous-wave near-infrared (lambda = 808 nm) laser powered above 1.3 W. When the temperature of the sample is externally raised above 200 degrees C, white light is observed above 1.0 W and a large enhancement of the broadband emission intensity is observed.