1 北京工业大学 激光工程研究院,北京 100124
2 中国电子科技集团公司第十一研究所,北京 100015
依据速率方程和边界条件,对高功率多点抽运全光纤激光器进行了研究.通过自制的级联侧面泵浦耦合器搭建全光纤激光器,级联耦合器的单点泵浦效率为96%,泵浦传输损耗为10%,信号光损耗分别是0.18 dB和0.87 dB;线性谐振腔结构中：前向抽运的光-光转换效率为69%,低于后向抽运中70%的光-光转换效率,与理论分析一致;双向泵浦方式中,在单臂输入975 nm泵浦功率为110 W的条件下,激光功率输出为311 W,中心波长为1 080 nm,光谱宽度为1.6 nm,光-光转换效率为70%,光束质量约为1.3.激光器性能稳定,若增加单臂泵浦功率或级联泵浦耦合器个数,可获得更高功率的激光输出.
激光器 全光纤激光器 双向抽运 双包层光纤 级联泵浦耦合器 高功率输出 Fiber laser All-fiber laser Two-end pump Double-clad fiber Cascaded pump-combiners High power output 光子学报
2015, 44(10): 1014002
Author Affiliations
Abstract
Institute of Quantum Electronics, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871
We present a novel design of a compact, stable, and easy-adjustable semiconductor optical amplifier (SOA) system. This SOA system is capable of providing up to 560-mW laser power at the wavelength of 852 nm. For the continuous-wave (CW) seeding laser, the amplification gain can reach 18 dB. We add amplitude modulation onto the CW laser and measure the modulation amplification between seeding and output laser. The amplification gain remains constant within the frequency range from 10 Hz to 1 MHz. The whole system could work in ultra-stable condition: for CW seeding laser, the fluctuation of output power is less than 0.33% in several hours.
半导体光放大器 新结构 高功率输出 幅度调制 超稳定工作 140.4480 Optical amplifiers 140.2020 Diode lasers 140.3325 Laser coupling Chinese Optics Letters
2009, 7(1): 0146
