Observation of energetic terahertz pulses from relativistic solid density plasmas

被引：50

作者：

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

May, T. ^{[3
]}

Herzer, S. ^{[1
]}

Reinhard, A. ^{[3
]}

Minardi, S. ^{[4
]}

Schubert, M. ^{[3
]}

Dillner, U. ^{[3
]}

Pradarutti, B. ^{[5
]}

Polz, J. ^{[1
,2
]}

Gaumnitz, T. ^{[1
]}

Kaluza, M. C. ^{[1
,2
]}

Jaeckel, O. ^{[1
,2
]}

Riehemann, S. ^{[5
]}

Ziegler, W. ^{[1
]}

Gemuend, H-P ^{[6
]}

Meyer, H-G ^{[3
]}

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] Inst Photon Technol, D-07702 Jena, Germany

[4] Univ Jena, Inst Appl Phys, D-07743 Jena, Germany

[5] Fraunhofer Inst Angew Opt & Feinmech, D-07745 Jena, Germany

[6] Max Planck Inst Radio Astron, D-53121 Bonn, Germany

来源：

NEW JOURNAL OF PHYSICS | 2012年 / 14卷

关键词：

HIGH-INTENSITY LASER; ASTROPHYSICS; GENERATION; BEAMS;

D O I：

10.1088/1367-2630/14/8/083012

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the first experimental observation of terahertz (THz) radiation from the rear surface of a solid target while interacting with an intense laser pulse. Experimental and two-dimensional particle-in-cell simulations show that the observed THz radiation is mostly emitted at large angles to the target normal. Numerical results point out that a large part of the emission originates from a micron-scale plasma sheath at the rear surface of the target, which is also responsible for the ion acceleration. This opens a perspective for the application of THz radiation detection for on-site diagnostics of particle acceleration in laser-produced plasmas.

引用

页数：11

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