Generation of an extreme ultraviolet supercontinuum with a multicycle chirped laser and a static electric field

We theoretically present a method for generating an ultrabroad extreme ultraviolet （XUV） supercontinuum by using the combination of a multicycle chirped laser and a static electric field. At a low laser intensity, the spectral cutoff is extended to the 495th order harmonic, and the bandwidth of the...

Full description

Saved in:
Bibliographic Details
Published inChinese physics B Vol. 21; no. 11; pp. 271 - 279
Main Author 张刚台 白婷婷 张美光
Format Journal Article
LanguageEnglish
Published 01.11.2012
Subjects
Bandwidth
Chirp
Electric fields
Field strength
Harmonics
Lasers
Spectra
Ultraviolet
啁啾脉冲
多周期
激光强度
电场
紫外线
超连续谱
静态
高次谐波
Online AccessGet full text

Cover

More Information
Summary:We theoretically present a method for generating an ultrabroad extreme ultraviolet （XUV） supercontinuum by using the combination of a multicycle chirped laser and a static electric field. At a low laser intensity, the spectral cutoff is extended to the 495th order harmonic, and the bandwidth of the supercontinuum spectrum is broadened to 535 eV. At a high laser intensity, the harmonic cutoff is enlarged to the 667th order, and a supercontinuum covering a bandwidth of 1035 eV is generated. In these two cases, the long quantum path is removed, and the short quantum path is selected. Especially for the relatively high laser intensity, an isolated 23-attosecond pulse with a bandwidth of about 170.6 eV is directly obtained. Finally, we also analyze the influences of the chirp parameter and the duration of the chirped pulse as well as the static field strength on the supereontinuum.
Bibliography:We theoretically present a method for generating an ultrabroad extreme ultraviolet （XUV） supercontinuum by using the combination of a multicycle chirped laser and a static electric field. At a low laser intensity, the spectral cutoff is extended to the 495th order harmonic, and the bandwidth of the supercontinuum spectrum is broadened to 535 eV. At a high laser intensity, the harmonic cutoff is enlarged to the 667th order, and a supercontinuum covering a bandwidth of 1035 eV is generated. In these two cases, the long quantum path is removed, and the short quantum path is selected. Especially for the relatively high laser intensity, an isolated 23-attosecond pulse with a bandwidth of about 170.6 eV is directly obtained. Finally, we also analyze the influences of the chirp parameter and the duration of the chirped pulse as well as the static field strength on the supereontinuum.
Zhang Gang-Tait, Bai Ting-Ting and Zhang Mei-Guang a） Department of Physics and Information Technology, Baoji University of Arts and Sciences, Baoji 721016, China b） Department of Mathematics, Baoji University of Arts and Sciences, Baoji 721013, China
11-5639/O4
high-order harmonic, attosecond pulse generation, supercontinuum, combined field
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/21/11/114209