College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha 410073, China.
Hunan Provincial Collaborative Innovation Center of High Power Fiber Laser, Changsha 410073, China.
Sci Rep. 2017 Feb 9;7:42402. doi: 10.1038/srep42402.
We demonstrated a high-power continuous-wave (CW) dual-wavelength Ho-doped fiber laser (HDFL) at 2049 nm and 2153 nm with a simple coupled-cavity configuration. A ~100 W laser diode-pumped fiber laser at 1150 nm served as the pump source. The maximum output power reached ~22.3 W and the slope efficiency was 23%. By altering the incident pump power, the power ratio of two signal wavelengths could be tuned in a large range due to gain competition. As far as we know, this is the first CW dual-wavelength HDFL with the power exceeding ten-watt-level, and the first dual-wavelength HDFL with the central wavelengths exceeding 2.0 μm and 2.15 μm respectively.
我们展示了一种基于简单耦合腔结构的高功率连续波（CW）双波长掺铥光纤激光器（HDFL），其中心波长分别位于 2049nm 和 2153nm。泵浦源为 1150nm 的约 100W 半导体激光二极管抽运光纤激光器。该激光器的最大输出功率达到约 22.3W，斜率效率为 23%。通过改变泵浦功率，由于增益竞争，两个信号波长的功率比可以在很大范围内进行调节。据我们所知，这是首个输出功率超过 10W 的 CW 双波长掺铥光纤激光器，也是首个中心波长分别超过 2.0μm 和 2.15μm 的双波长掺铥光纤激光器。
