Feng Jinxia, Li Yongmin, Tian Xiutao, Liu Jianli, Zhang Kuanshou
State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, P. R. China.
Opt Express. 2008 Aug 4;16(16):11871-7. doi: 10.1364/oe.16.011871.
We have demonstrated a 2 W cw single frequency 1.56 microm laser using a diode laser seeded Erbium doped fiber power amplifier, and a 715 mW cw single-frequency 780 nm laser by an external cavity enhanced second-harmonic-generation. The performance of the system was improved greatly by the seed diode laser optical locked to the resonant frequency of confocal F-P cavity. The linewidth of the 1.56 microm laser was narrowed from 2 MHz to 200 kHz, meanwhile, the intensity and phase noises were suppressed by 10 dB and 12 dB, respectively. The linewidth of the 780 nm laser was narrowed from 2 MHz to 300 kHz, meanwhile, the intensity and phase noises were suppressed by 11 dB and 13 dB, respectively.
我们展示了一种使用二极管激光器泵浦的掺铒光纤功率放大器的2瓦连续波单频1.56微米激光器，以及一种通过外腔增强二次谐波产生的715毫瓦连续波单频780纳米激光器。通过将种子二极管激光器光学锁定到共焦F-P腔的谐振频率，系统性能得到了极大改善。1.56微米激光器的线宽从2兆赫兹窄化到200千赫兹，同时强度噪声和相位噪声分别被抑制了10分贝和12分贝。780纳米激光器的线宽从2兆赫兹窄化到300千赫兹，同时强度噪声和相位噪声分别被抑制了11分贝和13分贝。
