Imaging of high harmonic radiation emitted during the interaction of a 20 TW laser with a solid target

被引：8

作者：

Chambers, DM

Preston, SG

Zepf, M

CastroCelin, M

Key, MH

Wark, JS

Dangor, AE

Dyson, A

Neely, D

Norreys, PA

机构：

[1] UNIV LONDON IMPERIAL COLL SCI TECHNOL & MED,BLACKETT LAB,LONDON SW7 2AZ,ENGLAND

[2] RUTHERFORD APPLETON LAB,DIDCOT OX11 0QX,OXON,ENGLAND

来源：

JOURNAL OF APPLIED PHYSICS | 1997年 / 81卷 / 05期

关键词：

D O I：

10.1063/1.364362

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present images of the source of extreme ultraviolet (XUV) harmonic emission at a wavelength of 220 Angstrom from the interaction of a 20 TW, 1.053 mu m Nd:glass laser beam focused to intensities up to 4x10(18) W cm(-2) onto a solid target. From these measurements we determine an upper limit to the source size and brightness of the harmonic emission to show its efficacy as a novel source of short-pulse, coherent XUV radiation. We also demonstrate the empirical scaling of the harmonic generation efficiency with irradiance up to 10(19) W mu m(2) cm(-2), and extrapolate to estimate the possible source brightness at higher irradiances. These source brightnesses are compared to those available from an x-ray laser system. (C) 1997 American Institute of Physics.

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页码：2055 / 2058

页数：4

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