Conditions for extracting photoionization cross sections from laser-induced
high-order-harmonic spectra

Wang, Guoli; Jin, Cheng; Le, Anh-Thu; Lin, Chii Dong

doi:10.1103/PhysRevA.86.015401

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Conditions for extracting photoionization cross sections from laser-induced high-order-harmonic spectra

Wang, Guoli; Jin, Cheng; Le, Anh-Thu; Lin, Chii Dong

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.

Keywords: Photoionization; High-order-harmonic spectra; Infrared lasers

Journal: Physical Review A, Volume: 86, Issue: 1, Starting Page: 015401, Ending Page: 015401

Date: 2012

Publisher URL: http://dx.doi.org/10.1103/PhysRevA.86.015401

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Record URL: http://hdl.handle.net/2097/14631

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