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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 38, Iss. 11 — Jun. 1, 2013
  • pp: 1906–1908

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, and X.-C. Zhang  »View Author Affiliations


Optics Letters, Vol. 38, Issue 11, pp. 1906-1908 (2013)
http://dx.doi.org/10.1364/OL.38.001906


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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.

© 2013 Optical Society of America

OCIS Codes
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing
(260.3090) Physical optics : Infrared, far
(350.5400) Other areas of optics : Plasmas
(320.6629) Ultrafast optics : Supercontinuum generation

ToC Category:
Nonlinear Optics

History
Original Manuscript: January 25, 2013
Revised Manuscript: March 12, 2013
Manuscript Accepted: March 22, 2013
Published: May 27, 2013

Citation
A. V. Borodin, N. A. Panov, O. G. Kosareva, V. A. Andreeva, M. N. Esaulkov, V. A. Makarov, A. P. Shkurinov, S. L. Chin, and X.-C. Zhang, "Transformation of terahertz spectra emitted from dual-frequency femtosecond pulse interaction in gases," Opt. Lett. 38, 1906-1908 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-11-1906

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