噪声抑制、1.56微米处主振荡器功率放大器的线宽变窄以及780纳米处的二次谐波产生输出。

Noise suppression, linewidth narrowing of a master oscillator power amplifier at 1.56 microm and the second harmonic generation output at 780 nm.

作者信息

Feng Jinxia, Li Yongmin, Tian Xiutao, Liu Jianli, Zhang Kuanshou

机构信息

State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, P. R. China.

出版信息

Opt Express. 2008 Aug 4;16(16):11871-7. doi: 10.1364/oe.16.011871.

DOI:10.1364/oe.16.011871

PMID:18679459

Abstract

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.

摘要

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。