Generation of terahertz radiation from ionizing two-color laser pulses in Ar filled metallic hollow waveguides

被引：39

作者：

Babushkin, I. ^{[1
]}

Skupin, S. ^{[2
,3
]}

Herrmann, J. ^{[4
]}

机构：

[1] Weierstrass Inst Angew Anal & Stochast, D-10117 Berlin, Germany

[2] Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany

[3] Univ Jena, Inst Condensed Matter Theory & Opt, D-07742 Jena, Germany

[4] Max Born Inst Nonlinear Opt & Short Time Spect, D-12489 Berlin, Germany

来源：

OPTICS EXPRESS | 2010年 / 18卷 / 09期

关键词：

COHERENT CONTROL; IONIZATION; PHASE; EMISSION; AIR;

D O I：

10.1364/OE.18.009658

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The generation of THz radiation from ionizing two-color femtosecond pulses propagating in metallic hollow waveguides filled with Ar is numerically studied. We observe a strong reshaping of the low-frequency part of the spectrum. More precisely, after several millimeters of propagation the spectrum is extended from hundreds of GHz up to similar to 150 THz. For longer propagation distances, nearly single-cycle near-infrared pulses with wavelengths around 4.5 mu m are obtained by appropriate spectral filtering, with an efficiency of 0.1-1%. (C) 2010 Optical Society of America

引用

页码：9658 / 9663

页数：6