Ultrabroadband coherent electric field from far infrared to 200 THz using air plasma induced by 10 fs pulses

被引：130

作者：

Matsubara, Eiichi ^{[1
]}

Nagai, Masaya ^{[1
]}

Ashida, Masaaki ^{[1
]}

机构：

[1] Osaka Univ, Grad Sch Engn Sci, Toyonaka, Osaka 5608531, Japan

来源：

APPLIED PHYSICS LETTERS | 2012年 / 101卷 / 01期

关键词：

ELECTROMAGNETIC PULSES; TERAHERTZ-EMISSION; LASER-PULSES; GENERATION;

D O I：

10.1063/1.4732524

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We generated an ultrabroadband infrared pulse ranging from far infrared to 200 THz through a plasma by focusing a hollow-fiber compressed intense 10-fs pulse and its second harmonic in air. We coherently detected the signal up to 100 THz with electro-optic sampling and clarified its drastic dependence on the orientation of the second harmonic crystal in a range of 100-200 THz with an HgCdTe detector. From these, we confirmed the whole frequency components originated from the AC biased plasma and were phase locked. This result opens the possibility of a pump-probe spectroscopy which covers the whole infrared range. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4732524]

引用

页数：4

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