title: Watt-level passively Q-switched heavily Er(3+)-doped ZBLAN fiber laser with a semiconductor saturable absorber mirror.
abstract: A diode-cladding pumped mid-infrared passively Q-switched Er(3+)-doped ZBLAN fiber laser with an average output power of watt-level based on a semiconductor saturable absorber mirror (SESAM) is demonstrated. Stable pulse train was produced at a slope efficiency of 17.8% with respect to launched pump power. The maximum average power of 1.01 W at a repetition rate of 146.3 kHz was achieved with a corresponding pulse energy of 6.9 μJ, from which the maximum peak power was calculated to be 21.9 W. To the best of our knowledge, the average power and the peak power are the highest in 3 μm region passively Q-switched fiber lasers. The influence of gain fiber length on the operation regime of the fiber laser has been investigated in detail.
authors.affiliation: State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an Shaanxi 710119, China.|Shaanxi Key Laboratory of Photonics Technology for Information, School of Electronics and Information Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China.|State Key Laboratory of Laser Interaction with Matter, Northwest Institute of Nuclear Technology, Xi'an Shaanxi 710024, China.|University of Chinese Academy of Sciences, Beijing, 100049, China.|Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi, 030006, China.
authors.forename: Yanlong
authors.initials: Y
authors.lastname: Shen
authors.affiliation: State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an Shaanxi 710119, China.|Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi, 030006, China.
authors.forename: Yishan
authors.initials: Y
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Laser Interaction with Matter, Northwest Institute of Nuclear Technology, Xi'an Shaanxi 710024, China.
authors.forename: Kunpeng
authors.initials: K
authors.lastname: Luan
authors.affiliation: State Key Laboratory of Laser Interaction with Matter, Northwest Institute of Nuclear Technology, Xi'an Shaanxi 710024, China.
authors.forename: Ke
authors.initials: K
authors.lastname: Huang
authors.affiliation: State Key Laboratory of Laser Interaction with Matter, Northwest Institute of Nuclear Technology, Xi'an Shaanxi 710024, China.
authors.forename: Mengmeng
authors.initials: M
authors.lastname: Tao
authors.affiliation: State Key Laboratory of Laser Interaction with Matter, Northwest Institute of Nuclear Technology, Xi'an Shaanxi 710024, China.
authors.forename: Hongwei
authors.initials: H
authors.lastname: Chen
authors.affiliation: State Key Laboratory of Laser Interaction with Matter, Northwest Institute of Nuclear Technology, Xi'an Shaanxi 710024, China.
authors.forename: Aiping
authors.initials: A
authors.lastname: Yi
authors.affiliation: State Key Laboratory of Laser Interaction with Matter, Northwest Institute of Nuclear Technology, Xi'an Shaanxi 710024, China.
authors.forename: Guobin
authors.initials: G
authors.lastname: Feng
authors.affiliation: Shaanxi Key Laboratory of Photonics Technology for Information, School of Electronics and Information Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China.
authors.forename: Jinhai
authors.initials: J
authors.lastname: Si