An efficient compact 300 mW narrow-linewidth single frequency fiber laser at 1.5 mu m

作者：Xu S H^*; Yang Z M; Liu T; Zhang W N; Feng Z M; Zhang Q Y; Jiang Z H

来源：Optics Express, 2010, 18(2): 1249-1254.

DOI：10.1364/OE.18.001249

• Frequency ranges
• Longitudinal modes
• Narrow-line width
• Phosphate glass fibers
• Propagation loss
• Relative intensity noise
• Single frequency fiber lasers
• Slope efficiencies

An efficient single frequency fiber laser by using a newly-developed Er3+/Yb3+ 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 mu m 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.

• 出版日期2010-1-18
• 单位华南理工大学