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Quantum path contribution to high-order harmonic spectra

Brunetti, E. and Issac, R. and Jaroszynski, D.A. (2008) Quantum path contribution to high-order harmonic spectra. Physical Review A, 77 (2). 023422-1-023422-6. ISSN 1050-2947

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Abstract

Ultrashort pulses of uv and soft x-ray radiation with durations ranging from femtoseconds to attoseconds can be produced as high-order harmonics of the fundamental frequency of a laser beam focused into gas. Applications to fields such as spectroscopy and attosecond metrology require the control and characterization of spectral and spatial properties of the emitted radiation. These are determined by both single atom and macroscopic response of the interaction medium to the laser field. Here we present evidence that microscopic effects have a larger influence than previously thought, and can induce a splitting and a frequency shift of the harmonic lines. These results not only offer a direct diagnostic for high-order harmonic generation, but also enable us to better tune the parameters of the produced radiation, while giving a deeper insight into the fundamental physics underlying this nonlinear optical process. © 2008 The American Physical Society

Item type: Article
ID code: 17095
Notes: http://suprimo.lib.strath.ac.uk/primo_library/libweb/action/display.do?ct=display&doc=SUVOY607723&indx=1&frbg=&dum=true&vid=SUVU01&vl(54032236UI0)=lsr02&vl(96071691UI1)=all_items&srt=rank&indx=1&dstmp=1272656152924&tab=local&ct=search&scp.scps=scope%3A(SU)&vl(freeText0)=Physical%20Review%20A%3A%20Atomic%2C%20Molecular%20and%20Optical%20Physics&fn=search&mode=Basic&dscnt=0
Keywords: quantum path contribution, high-order harmonic spectra, uv and soft x-ray radiation, Physics, Atomic and Molecular Physics, and Optics
Subjects: Science > Physics
Department: Faculty of Science > Physics
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Depositing user: Strathprints Administrator
Date Deposited: 30 Apr 2010 20:49
Last modified: 05 Sep 2014 02:07
URI: http://strathprints.strath.ac.uk/id/eprint/17095

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