title: Broadband amplification and highly efficient lasing in erbium-doped tellurite microstructured fibers.
abstract: We report broadband amplification and highly efficient lasing in erbium-doped tellurite microstructured fibers. A broad positive net gain bandwidth of 113 nm (1524-1637 nm) is obtained in a 17 cm long erbium-doped tellurite microstructured fiber upon a pump power of 94 mW at 1480 nm. An all-fiber lasing at 1561 nm with maximum unsaturated power of 140 mW and slope efficiency of 53.7% is achieved from the fiber by employing a linear cavity. In addition, the influence of the fiber length on amplification and lasing is investigated and laser oscillation at 1535 nm is realized in a 4.3 cm long fiber.
authors.affiliation: State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, China.
authors.forename: Zhixu
authors.initials: Z
authors.lastname: Jia
authors.forename: Hang
authors.initials: H
authors.lastname: Li
authors.forename: Xiangwei
authors.initials: X
authors.lastname: Meng
authors.forename: Lai
authors.initials: L
authors.lastname: Liu
authors.forename: Guanshi
authors.initials: G
authors.lastname: Qin
authors.forename: Weiping
authors.initials: W
authors.lastname: Qin