CEP-stable tunable THz-emission originating from laser-waveform-controlled sub-cycle plasma-electron bursts

Abstract : 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.
Liste complète des métadonnées

https://hal-ensta.archives-ouvertes.fr/hal-01164337
Contributeur : Stefan Haessler <>
Soumis le : mercredi 17 juin 2015 - 16:33:05
Dernière modification le : lundi 24 septembre 2018 - 09:40:02
Document(s) archivé(s) le : mardi 15 septembre 2015 - 15:17:38

Fichier

oe-23-12-15278.pdf
Publication financée par une institution

Identifiants

Citation

T Balčiunas, D Lorenc, M Ivanov, O Smirnova, A Zheltikov, et al.. CEP-stable tunable THz-emission originating from laser-waveform-controlled sub-cycle plasma-electron bursts. Optics Express, Optical Society of America, 2015, 23, pp.15278. 〈https://www.osapublishing.org/oe/abstract.cfm?uri=oe-23-12-15278〉. 〈10.1364/OE.23.015278〉. 〈hal-01164337〉

Partager

Métriques

Consultations de la notice

312

Téléchargements de fichiers

159