Isolated sub-fs XUV pulse generation in Mn plasma ablation

被引：45

作者：

Ganeev, R. A. ^{[1
,2
,3
]}

Witting, T. ^{[1
]}

Hutchison, C. ^{[1
]}

Frank, F. ^{[1
]}

Tudorovskaya, M. ^{[4
,5
]}

Lein, M. ^{[4
,5
]}

Okell, W. A. ^{[1
]}

Zair, A. ^{[1
]}

Marangos, J. P. ^{[1
]}

Tisch, J. W. G. ^{[1
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2AZ, England

[2] Inst Ion Plasma & Laser Technol, Tashkent 100125, Uzbekistan

[3] Voronezh State Univ, Voronezh 394006, Russia

[4] Leibniz Univ Hannover, Inst Theoret Phys, D-30167 Hannover, Germany

[5] Leibniz Univ Hannover, Ctr Quantum Engn & Space Time Res QUEST, D-30167 Hannover, Germany

来源：

OPTICS EXPRESS | 2012年 / 20卷 / 23期

基金：

英国工程与自然科学研究理事会;

关键词：

HIGH-HARMONIC-GENERATION; LASER-PULSES; PHOTOIONIZATION; ENHANCEMENT; INTENSITY; RADIATION; SPECTRA; REGION; GASES;

D O I：

10.1364/OE.20.025239

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report studies of high-order harmonic generation in laser-produced manganese plasmas using sub-4-fs drive laser pulses. The measured spectra exhibit resonant enhancement of a small spectral region of about 2.5 eV width around the 31st harmonic (similar to 50eV). The intensity contrast relative to the directly adjacent harmonics exceeds one order of magnitude. This finding is in sharp contrast to the results reported previously for multi-cycle laser pulses [Physical Review A 76, 023831 (2007)]. Theoretical modelling suggests that the enhanced harmonic emission forms an isolated sub-femtosecond pulse. (C) 2012 Optical Society of America

引用

页码：25239 / 25248

页数：10

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