We report 784-nm (^1 G4 --> ^3 H5 transition) amplified spontaneous emission (ASE) from Tm3+-doped fluoride (ZrF4-BaF2-LaF3-AlF3-NaF) glass fiber pumped by an 1120-nm fiber laser. To our best knowledge, this is the first report of 784-nm (^1 G4 --> ^3 H5 transition) ASE in a Tm3+-doped fluoride fiber laser. Its effects on a 480-nm (^1 G4 --> ^3 H6 transition) blue laser were also discussed.
© 2005 Optical Society of America
Guanshi Qin, Shenghong Huang, Yan Feng, A. Shirakawa, and Ken-ichi Ueda, "784-nm amplified spontaneous emission from Tm3+-doped fluoride glass fiber pumped by an 1120-nm fiber laser," Opt. Lett. 30, 269-271 (2005)