title: Emission of 1.38 microm and gain properties from Ho(3+)-doped low-phonon-energy gallate bismuth lead oxide glasses for fiber-optic amplifiers.
abstract: Efficient emission at 1.38 mum wavelength from holmium (Ho(3+))-doped low-phonon-energy gallate bismuth lead (GBL) oxide glasses, owing to the Ho(3+): ((5)S(2),(5)F(4))-->(5)I(5) transition, was observed, and the stimulated emission cross section was calculated to be 2.4x10(-21) cm(2). Population inversions between the ((5)S(2),(5)F(4)) and (5)I(5) levels have been achieved, and a broad gain bandwidth from 1350 to 1450 nm was obtained. The large product of emission cross section and measured lifetime also support this characteristic. The results indicate that a Ho(3+)-doped GBL glass system is a promising candidate for the development of E-band (1360-1460 nm) fiber-optic amplifiers.
authors.affiliation: 1Department of Electronic Engineering, City University of Hong Kong, Hong Kong, China.
authors.forename: Bo
authors.initials: B
authors.lastname: Zhou
authors.forename: Hai
authors.initials: H
authors.lastname: Lin
authors.forename: Dianlai
authors.initials: D
authors.lastname: Yang
authors.forename: Edwin Yue-Bun
authors.initials: EY
authors.lastname: Pun