Hollow-core-waveguide compression of multi-millijoule CEP-stable 3.2 μm pulses
Hollow-core-waveguide compression of multi-millijoule CEP-stable 3.2 μm pulses
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DOI：
10.1364/optica.3.001308
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发表时间：
2016-12-20
期刊：
影响因子：
10.4
通讯作者：
Baltuska, Andrius
中科院分区：
文献类型：
--
作者：
Fan, Guangyu;Balciunas, Tadas;Baltuska, Andrius
我们提出了高功率脉冲压缩的延伸更深到具有挑战性的红外光谱范围约3.2 μ m的波长，材料的吸收，色散和自由电子干扰的影响，非线性传播成为越来越多的限制参数。用氩作为非线性介质，在大芯径空心光纤中对KTA参量放大器输出的5mJ，80fs脉冲进行了光谱展宽。随后的压缩，通过在CaF2中的异常色散产生2.5兆焦耳接近变换限制的两个周期的脉冲，表现出被动稳定的载波包络相位（CEP）。此外，我们概述了产生具有良好的空间和时间特性的子双周期脉冲的可行性。(C)2016美国光学学会
We present the extension of high-power pulse compression deeper into the challenging IR spectral range around 3.2 mu m wavelength, where the effects of material absorption, dispersion, and free electron disturbance on nonlinear propagation become increasingly limiting parameters. 5 mJ, 80 fs pulses from a KTA parametric amplifier were spectrally broadened in a large-core hollow fiber with argon as the nonlinear medium. Subsequent compression through anomalous dispersion in CaF2 yielded 2.5 mJ close-to-transform-limited two-cycle pulses exhibiting a passively stabilized carrier envelope phase (CEP). Furthermore, we outline the feasibility of generating sub-two-cycle pulses with good spatial and temporal characteristics. (C) 2016 Optical Society of America