title: 400 mW ultrashort cavity low-noise single-frequency Yb³⁺-doped phosphate fiber laser.
abstract: A compact, low-noise, single-frequency fiber laser by using a newly developed Yb³⁺ heavily doped single-mode phosphate glass fiber has been demonstrated. Over 400 mW stable continuous wave single transverse and longitudinal mode laser at 1.06 μm was achieved from a 0.8 cm long active fiber. The measured slope efficiency and estimated quantum efficiency of laser emission are 72.7% and 93%, respectively. The signal-to-noise ratio is higher than 72 dB, and the linewidth of the fiber laser is less than 7 kHz, while the measured relative intensity noise is less than -130 dB/Hz at frequencies of over 1.5 MHz.
authors.affiliation: State Key Laboratory of Luminescent Materials and Devices and Institute of Optical Communication Materials, South China University of Technology, Guangzhou, China.
authors.forename: Shanhui
authors.initials: S
authors.lastname: Xu
authors.forename: Zhongmin
authors.initials: Z
authors.lastname: Yang
authors.forename: Weinan
authors.initials: W
authors.lastname: Zhang
authors.forename: Xiaoming
authors.initials: X
authors.lastname: Wei
authors.forename: Qi
authors.initials: Q
authors.lastname: Qian
authors.forename: Dongdan
authors.initials: D
authors.lastname: Chen
authors.forename: Qinyuan
authors.initials: Q
authors.lastname: Zhang
authors.forename: Shaoxiong
authors.initials: S
authors.lastname: Shen
authors.forename: Mingying
authors.initials: M
authors.lastname: Peng
authors.forename: Jianrong
authors.initials: J
authors.lastname: Qiu