Pulse preserving flat-top supercontinuum generation in all-normal dispersion photonic crystal fibers
Pulse preserving flat-top supercontinuum generation in all-normal dispersion photonic crystal fibers
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DOI：
10.1364/josab.27.000550
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发表时间：
2010-03-01
影响因子：
1.9
通讯作者：
Heidt, Alexander M.
中科院分区：
文献类型：
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作者：
Heidt, Alexander M.
对高能飞秒泵浦作用下全正色散光子晶体光纤中超连续谱的产生进行了数值研究。结果表明，在整个带宽范围内，可以实现平面度优于+/- 1 dB的SC谱相干八度。在时域内保持单个脉冲，即使通过简单的线性啁啾消除，也可以将其外部压缩到10fs以下的状态。全相位补偿接近单光循环极限，导致峰值功率谱密度达到数千瓦/纳米。因此，生成的SC对于需要高宽带频谱功率密度以及在时域中定义脉冲轮廓的应用是理想的。所产生的SC的特性与输入脉冲持续时间无关。(C) 2010年美国光学学会
Supercontinuum (SC) generation in all-normal dispersion photonic crystal fiber under high energy femtosecond pumping is numerically investigated. It is shown that coherent octave spanning SC spectra with flatness of better than +/- 1 dB can be achieved over the entire bandwidth. A single pulse is maintained in the time domain, which may be externally compressed to the sub-10 fs regime even by simple linear chirp elimination. The single optical cycle limit is approached for full phase compensation, leading to peak power spectral densities of multiple kilowatts/nanometer. The generated SC is therefore ideal for applications which require high broadband spectral power densities as well as a defined pulse profile in the time domain. The properties of the generated SC are shown to be independent of the input pulse duration. (C) 2010 Optical Society of America