%0 Journal Article
%T CEP-stable tunable THz-emission originating from laser-waveform-controlled sub-cycle plasma-electron bursts
%+ Vienna University of Technology (TU Wien)
%+ Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie (MBI)
%+ Lomonosov Moscow State University (MSU)
%+ Institute of optics and quantum electronics
%+ Laboratoire d'optique appliquée (LOA)
%A Balčiunas, T
%A Lorenc, D
%A Ivanov, M
%A Smirnova, O
%A Zheltikov, A, M
%A Dietze, D
%A Unterrainer, K
%A Rathje, T
%A Paulus, Gerhard, G.
%A Baltuska, A.
%A Haessler, Stefan
%Z Austrian Science Fund (FWF) SFB NextLite F4903-N23
%< avec comité de lecture
%@ 1094-4087
%J Optics Express
%I Optical Society of America - OSA Publishing
%V 23
%P 15278
%8 2015-06-02
%D 2015
%Z 1501.00658
%R 10.1364/OE.23.015278
%Z Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph]
%Z Physics [physics]/Physics [physics]/Optics [physics.optics]Journal articles
%X We study THz-emission from a plasma driven by an incommensurate-frequency two-colour laser field. A semi-classical transient electron current model is derived from a fully quantum-mechanical description of the emission process in terms of sub-cycle field-ionization followed by continuum-continuum electron transitions. For the experiment, a CEP-locked laser and a near-degenerate optical parametric amplifier are used to produce two-colour pulses that consist of the fundamental and its near-half frequency. By choosing two incommensurate frequencies, the frequency of the CEP-stable THz-emission can be continuously tuned into the mid-IR range. This measured frequency dependence of the THz-emission is found to be consistent with the semi-classical transient electron current model, similar to the Brunel mechanism of harmonic generation.
%G English
%2 https://hal-ensta-paris.archives-ouvertes.fr/hal-01164337/document
%2 https://hal-ensta-paris.archives-ouvertes.fr/hal-01164337/file/oe-23-12-15278.pdf
%L hal-01164337
%U https://hal-ensta-paris.archives-ouvertes.fr/hal-01164337
%~ X
%~ ENSTA
%~ CNRS
%~ X-LOA
%~ X-DEP
%~ X-DEP-PHYS
%~ OPENAIRE
%~ ENSTA_LOA
%~ UNIV-PARIS-SACLAY
%~ X-SACLAY
%~ ENSTA-SACLAY
%~ ANR