Sun Chang, Ge Tingwu, Li Siyuan, An Na, Wang Zhiyong
Appl Opt. 2016 May 10;55(14):3746-50. doi: 10.1364/AO.55.003746.
We present a high-power white supercontinuum (SC) all-fiber laser source with average power of 67.9 W, spectrum ranging from 500 to 1700 nm, and spectral width exceeding 1000 nm for spectrum with flatness below 10 dB (except pump wavelength). Also, the visible waveband power (below 850 nm) occupies about 21% of the total SC power. A 145 W high-power picosecond pulse fiber laser is specially designed with high repetition frequency of 656 MHz to reduce nonlinear effects. Meanwhile, a homemade high-power mode field adaptor that can operate stably at hundreds of watts of pulse power has high coupling efficiency of 82%. To our knowledge, the 67.9 W white SC fiber laser source we achieved is the highest reported with such a wide and flat optical spectrum.
我们展示了一种高功率白色超连续谱（SC）全光纤激光源，其平均功率为67.9 W，光谱范围为500至1700 nm，对于平坦度低于10 dB（泵浦波长除外）的光谱，光谱宽度超过1000 nm。此外，可见光波段功率（低于850 nm）约占总超连续谱功率的21%。一款145 W高功率皮秒脉冲光纤激光器经过特殊设计，具有656 MHz的高重复频率以减少非线性效应。同时，一款自制的高功率模式场适配器能够在数百瓦的脉冲功率下稳定运行，耦合效率高达82%。据我们所知，我们实现的67.9 W白色超连续谱光纤激光源是报道中具有如此宽且平坦光谱的最高功率的。
