title: Superbroadband 1310 nm emission from bismuth and tantalum codoped germanium oxide glasses.
abstract: Near-infrared broadband emission from bismuth-tantalum-codoped germanium oxide glasses was observed at room temperature when the glasses were pumped by an 808 nm laser diode. The emission band covered the O, E, S, C, and L bands (1260-1625 nm), with a maximum peak at approximately 1310 nm, a FWHM broader than 400 nm, and a lifetime longer than 200 micros. The observed broadband luminescence was attributed to bismuth clusters in the glasses. Bismuth-tantalum-codoped germanium oxide glass might be promising as amplification media for broadly tunable lasers and wideband amplifiers in optical communications.
authors.affiliation: Shanghai Institute of Optics & Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China. m_ypeng@yahoo.com
authors.forename: Mingying
authors.initials: M
authors.lastname: Peng
authors.forename: Jianrong
authors.initials: J
authors.lastname: Qiu
authors.forename: Danping
authors.initials: D
authors.lastname: Chen
authors.forename: Xiangeng
authors.initials: X
authors.lastname: Meng
authors.forename: Congshan
authors.initials: C
authors.lastname: Zhu