An efficient compact 300 mW narrow-linewidth single frequency fiber laser at 1.5 microm.
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.
Xu
S H
SH
Institute of Optical Communication Materials, South China University of Technology, GuangZhou, P. R. China.
Yang
Z M
ZM
Liu
T
T
Zhang
W N
WN
Feng
Z M
ZM
Zhang
Q Y
QY
Jiang
Z H
ZH
D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D007834:Lasers; D008904:Miniaturization; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity