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Number of results
2008 | 113 | 3 | 769-776
Article title

Few-Cycle Laser Pulses: The Carrier-Envelope Phase, Its Role in the THz Emission from Laser-Generated Plasmas and a New Way to Measure It

Content
Title variants
Languages of publication
EN
Abstracts
EN
Terahertz emission from laser-generated air plasmas has recently been identified as an interesting source for THz radiation. High intensities and a large bandwidth of the THz pulses can be achieved. We briefly review several mechanisms which were employed to generate the quasi-static dipole moment needed for the optical rectification process. This leads us to a discussion of a specific application of THz emission from an air plasma, namely the investigation of the carrier-envelope phase of few-cycle optical pulses. Such pulses of a duration of less than 10 fs induce a spatial charge asymmetry in the plasma directly via non-linear tunneling ionization. The asymmetry, and with it the emission of the THz radiation from the plasma, depend on the carrier-envelope phase, with the consequence that one can determine the phase by measurement of the amplitude and polarity of the THz pulse.
Keywords
EN
Year
Volume
113
Issue
3
Pages
769-776
Physical description
Dates
published
2008-03
received
2007-08-26
References
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Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-appv113n301kz
Identifiers
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