Measuring and controlling the birth of attosecond XUV pulses

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DOIResolve DOI: http://doi.org/10.1038/nphys434
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TypeArticle
Journal titleNature physics
ISSN17452473
Volume2
Issue11
Pages781786; # of pages: 6
AbstractGenerating attosecond pulses has required a radically different approach from previous ultrafast optical methods. The technology of attosecond measurement, however, is built on established methods of characterizing femtosecond pulses: the pulse is measured after it has left the region where it was produced. We offer a completely different approach: in situ measurement. That is, we integrate attosecond-pulse production and measurement in a manner that can be applied to many high-order nonlinear interactions. To demonstrate this approach, we combine a low-intensity (<10-3) second-harmonic beam with the fundamental beam, to gently perturb the production process without significantly modifying it. The attosecond-pulse duration is read from the modulation of the even-harmonic signal as a function of the two-field delay. Increasing the second-harmonic intensity slightly (<10-2), we extend measurement to control. We demonstrate control by manipulating the high-harmonic spectrum with high efficiency.
Publication date
AffiliationNational Research Council Canada; NRC Steacie Institute for Molecular Sciences
Peer reviewedNo
Identifier20624037
NPARC number12337704
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Record identifierb9e9c179-e85c-4bc4-a9aa-dbce99a19cc6
Record created2009-09-10
Record modified2016-05-09
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