Abstract

We show that photoionization cross sections of atoms can be accurately extracted from the high-order-harmonic spectra generated by intense infrared lasers only if the degree of ionization in the gas medium is small, implying that for this purpose the high-order-harmonic generation spectra should be taken at low gas pressure and at low laser intensity experimentally.

Department(s)

Physics

Keywords and Phrases

Degree Of Ionization; Gas Medium; Gas Pressures; Laser Induced; Laser Intensities; Photoionization Cross Section, Ionization Of Gases, Photoionization

International Standard Serial Number (ISSN)

1050-2947

Document Type

Article - Journal

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 2012 American Physical Society (APS), All rights reserved.

Included in

Physics Commons

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