Open AccessAn efficient compact 300 mW narrow-linewidth single frequency fiber laser at 15 μm
Author(s) -
Shanhui Xu,
Zhongmin Yang,
T Liu,
W N Zhang,
Zhouming Feng,
Qixiong Zhang,
Zhonghong Jiang
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.001249
Subject(s) - laser linewidth , materials science , optics , fiber laser , slope efficiency , laser , fiber , single mode optical fiber , relative intensity noise , optical fiber , semiconductor laser theory , physics , composite material
An efficient single frequency fiber laser by using a newly-developed Er(3+)/Yb(3+) co-doped single mode phosphate glass fiber with the net gain coefficient of 5.2 dB/cm and propagation loss coefficient of 0.04 dB/cm has been demonstrated. Over 300 mW stable continuous -wave single transverse and longitudinal mode seed lasering at 1.5 microm has been achieved from a 2.0 cm-long active fiber. The measured slope efficiency and the calculated quantum efficiency of laser emission are found to be 30.9% and 0.938 +/- 0.081, respectively. It is found that the linewidth of the fiber laser is less than 2 kHz, and the measured relative intensity noise (RIN) is around -120 dB/Hz in the frequency range of 50 to 500 kHz.