Nielsen Carsten Krogh, Keiding Søren Rud
Department of Physics, University of Aarhus, DK-8000 Aarhus C, Denmark.
Opt Lett. 2007 Jun 1;32(11):1474-6. doi: 10.1364/ol.32.001474.
An environmentally stable mode-locked fiber laser based on nonlinear polarization rotation is experimentally demonstrated. The laser is based on a novel laser configuration that has negligible low-power steady-state reflectivity from one side and, consequently, no CW gain. The laser is self starting and the configuration is implementable as an all-fiber laser with standard polarization-maintaining fiber-pigtailed components. A pulse duration of 5.6 ps is obtained at a repetition rate of 5.96 MHz and at an average power of 8 mW. As an application of the proposed laser configuration, 213 mW of supercontinuum (600-1750 nm) was demonstrated from a fiber laser system with no sections of free-space optics.
实验证明了一种基于非线性偏振旋转的环境稳定锁模光纤激光器。该激光器基于一种新颖的激光配置，其一侧的低功率稳态反射率可忽略不计，因此没有连续波增益。该激光器可自启动，并且该配置可作为具有标准保偏光纤尾纤组件的全光纤激光器来实现。在重复频率为5.96 MHz、平均功率为8 mW的情况下，获得了5.6 ps的脉冲持续时间。作为所提出的激光配置的一种应用，在没有自由空间光学元件部分的光纤激光系统中实现了213 mW的超连续谱（600 - 1750 nm）。
