Transformation of terahertz spectra emitted from dual-frequency femtosecond pulse interaction in gases

A. V. Borodin, N. A. Panov, O. G. Kosareva, V. A. Andreeva, M. N. Esaulkov, V. A. Makarov, A. P. Shkurinov, S. L. Chin, X. C. Zhang

Research output: Contribution to journalArticlepeer-review

66 Scopus citations

Abstract

We demonstrate that the two basic physical mechanisms of terahertz (THz) generation in a femtosecond filament, namely, the free electron photocurrent and the nonlinear polarization of neutrals, can be identified through the spectral analysis of THz radiation. The contribution from the photocurrent peaks at the units of THz, while the neutrals yield the peak at the tens of THz. We suggest the practical implementation of such spectral analysis by varying the initial transform-limited laser pulse duration.

Original languageEnglish (US)
Pages (from-to)1906-1908
Number of pages3
JournalOptics Letters
Volume38
Issue number11
DOIs
StatePublished - Jun 1 2013

Fingerprint Dive into the research topics of 'Transformation of terahertz spectra emitted from dual-frequency femtosecond pulse interaction in gases'. Together they form a unique fingerprint.

Cite this