Broadband conversion of visible light to near-infrared emission by Ce3+, Yb3+-codoped yttrium aluminum garnet - Liu, Xiaofeng; Teng, Yu; Zhuang, Yixi; Xie, Junhua; Qiao, Yanbo; Dong, Guoping; Chen, Danping; Qiu, Jianrong (Optics letters, 2009)