0.42 TW 2-cycle pulses at 1.8 μm via hollow-core fiber compression
0.42 TW 2-cycle pulses at 1.8 μm via hollow-core fiber compression
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DOI：
10.1063/1.4934861
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发表时间：
2015-11-02
影响因子：
4
通讯作者：
Schmidt, Bruno E.
中科院分区：
文献类型：
--
作者：
Cardin, Vincent;Thire, Nicolas;Schmidt, Bruno E.
通过使用拉伸的空心芯光纤进行脉冲压缩，我们产生了1.8 μ m （12 fs）的2周期脉冲，以100 Hz的重复频率携带5 mJ的脉冲能量。这种中红外光谱范围内的能量缩放是通过在松散聚焦条件下降低强度来实现的，从而抑制了电离引起的损失。将相应的大焦点耦合到内径为1mm的空心芯光纤中，在压力梯度下操作以进一步减少有害的非线性效应。在3 m的传播距离上获得了光谱展宽所需的自相位调制量。(C) 2015 AIP出版有限责任公司
By employing pulse compression with a stretched hollow-core fiber, we generated 2-cycle pulses at 1.8 mu m (12 fs) carrying 5 mJ of pulse energy at 100 Hz repetition rate. This energy scaling in the mid-infrared spectral range was achieved by lowering the intensity in a loose focusing condition, thus suppressing the ionization induced losses. The correspondingly large focus was coupled into a hollow-core fiber of 1 mm inner diameter, operated with a pressure gradient to further reduce detrimental nonlinear effects. The required amount of self-phase modulation for spectral broadening was obtained over 3 m of propagation distance. (C) 2015 AIP Publishing LLC.