Observation of Gigawatt-Class THz Pulses from a Compact Laser-Driven Particle Accelerator

被引：171

作者：

Gopal, A. ^{[1
,2
]}

Herzer, S. ^{[1
,2
]}

Schmidt, A. ^{[1
]}

Singh, P. ^{[1
]}

Reinhard, A. ^{[1
]}

Ziegler, W. ^{[1
]}

Broemmel, D. ^{[3
]}

Karmakar, A. ^{[3
]}

Gibbon, P. ^{[3
]}

Dillner, U. ^{[4
]}

May, T. ^{[4
]}

Meyer, H-G. ^{[4
]}

Paulus, G. G. ^{[1
,2
]}

机构：

[1] Univ Jena, Inst Opt & Quantumelect, D-07743 Jena, Germany

[2] Helmholtz Inst Jena, D-07743 Jena, Germany

[3] Forschungszentrum Julich, Inst Adv Simulat, Julich Supercomp Ctr, D-52425 Julich, Germany

[4] Inst Photon Technol, D-07702 Jena, Germany

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 111卷 / 07期

关键词：

TERAHERTZ RADIATION; ELECTROMAGNETIC PULSES; GENERATION; TECHNOLOGY; MEDIA; BEAM;

D O I：

10.1103/PhysRevLett.111.074802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the observation of subpicosecond terahertz (T-ray) pulses with energies >= 460 mu J from a laser-driven ion accelerator, thus rendering the peak power of the source higher even than that of state-of-the-art synchrotrons. Experiments were performed with intense laser pulses (up to 5 X 10(19) W/cm(2)) to irradiate thin metal foil targets. Ion spectra measured simultaneously showed a square law dependence of the T-ray yield on particle number. Two-dimensional particle-in-cell simulations show the presence of transient currents at the target rear surface which could be responsible for the strong T-ray emission.

引用

页数：5

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