Universal route to optimal few- to single-cycle pulse generation in hollow-core fiber compressors.
Universal route to optimal few- to single-cycle pulse generation in hollow-core fiber compressors.
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DOI：
10.1038/s41598-018-20580-1
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发表时间：
2018-02-02
影响因子：
4.6
通讯作者：
Crespo H
中科院分区：
文献类型：
--
作者：
Conejero Jarque E;San Roman J;Silva F;Romero R;Holgado W;Gonzalez-Galicia MA;Alonso B;Sola IJ;Crespo H
充气空心光纤 (HCF) 脉冲后压缩器可产生几个至单周期脉冲，是阿秒科学和超快光谱学的关键支持工具。由于脉冲的超宽带宽和充分的时间诊断的需要，在这种情况下实现最佳性能可能极具挑战性。这些困难阻碍了 HCF 后压缩器的充分利用，即稳定且高质量的近傅里叶变换极限脉冲的生成。在这里，我们表明，无论气体类型或所使用的激光系统等条件如何，都有一种通用途径可以获得单周期范围内的最短稳定输出脉冲。使用色散扫描技术进行的数值模拟和实验测量表明，在相当一般的条件下，压缩后的脉冲表现出光纤内最佳非线性传播固有的残余三阶色散，这与世界各地多个实验室独立进行的测量结果一致。对这种效应的理解及其适当的纠正，例如使用简单的透明光学介质，只需对现有设置进行微小的改变即可实现高质量的压缩后脉冲。这些优化的源对科学和技术的许多领域都有影响，并且应该能够在少周期到单周期脉冲范围内实现新的、令人兴奋的应用。
Gas-filled hollow-core fiber (HCF) pulse post-compressors generating few- to single-cycle pulses are a key enabling tool for attosecond science and ultrafast spectroscopy. Achieving optimum performance in this regime can be extremely challenging due to the ultra-broad bandwidth of the pulses and the need of an adequate temporal diagnostic. These difficulties have hindered the full exploitation of HCF post-compressors, namely the generation of stable and high-quality near-Fourier-transform-limited pulses. Here we show that, independently of conditions such as the type of gas or the laser system used, there is a universal route to obtain the shortest stable output pulse down to the single-cycle regime. Numerical simulations and experimental measurements performed with the dispersion-scan technique reveal that, in quite general conditions, post-compressed pulses exhibit a residual third-order dispersion intrinsic to optimum nonlinear propagation within the fiber, in agreement with measurements independently performed in several laboratories around the world. The understanding of this effect and its adequate correction, e.g. using simple transparent optical media, enables achieving high-quality post-compressed pulses with only minor changes in existing setups. These optimized sources have impact in many fields of science and technology and should enable new and exciting applications in the few- to single-cycle pulse regime.
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影响因子：
2.1
作者：
Alonso, Benjamin;Miranda, Miguel;Crespo, Helder
通讯作者：
Crespo, Helder
影响因子：
3.6
作者：
Cerullo, G;Nisoli, M;De Silvestri, S
通讯作者：
De Silvestri, S
影响因子：
10.4
作者：
Fan, Guangyu;Balciunas, Tadas;Baltuska, Andrius
通讯作者：
Baltuska, Andrius
影响因子：
4
作者：
Cardin, Vincent;Thire, Nicolas;Schmidt, Bruno E.
通讯作者：
Schmidt, Bruno E.
DOI：
10.1364/josaa.21.000053
发表时间：
2004-01-01
影响因子：
1.9
作者：
Guizar-Sicairos, M;Gutiérrez-Vega, JC
通讯作者：
Gutiérrez-Vega, JC