El-Taher Atalla E, Ania-Castañón Juan D, Karalekas Vassilis, Harper Paul
Photonics Research Group Aston University, Birmingham, B4 7ET, UK.
Opt Express. 2009 Sep 28;17(20):17909-15. doi: 10.1364/OE.17.017909.
Supercontinuum generation in a multi-fiber ultra-long Raman fiber laser cavity is experimentally investigated for the first time. We demonstrate significantly enhanced spectral flatness and supercontinuum generation efficiency using only conventional single mode silica fiber. With a pump power of only 1.63W a approximately 15 dB bandwidth >260 nm wide (from 1440 to >1700 nm) supercontinuum source is reported with a flatness of <1 dB over 180 nm using an optimised hybrid TW/HNLF cavity. We address the dependence of the supercontinuum spectrum on the input pump power and ultra-long Raman cavity.
首次对多光纤超长拉曼光纤激光腔中的超连续谱产生进行了实验研究。我们证明，仅使用传统单模石英光纤就能显著提高光谱平坦度和超连续谱产生效率。在仅1.63W的泵浦功率下，使用优化的混合双包层/高非线性光纤腔，报道了一个带宽约为260nm（从1440nm到大于1700nm）的超连续谱源，在180nm范围内平坦度小于1dB。我们研究了超连续谱对输入泵浦功率和超长拉曼腔的依赖性。
