Share Email Print

Proceedings Paper

Using air as the nonlinear media for THz wave generation
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

We report the first systematic study of broadband THz wave generation by using the focused femtosecond laser beams in ambient air. Generations of pulsed THz waves using air as the nonlinear media have been previously demonstrated by Cook et al. and Hartmut et al. We measured dependence of generated THz wave on the polarization, amplitude and phase of the individually controlled fundamental and second harmonic beams. Our results confirms that four-wave-mixing rectification is the major mechanism of THz wave generation with mixing the fundamental and the SH beams in air. This work is significant by providing the feasibility of standoff distance detection greater than 50 meters.

Paper Details

Date Published: 19 May 2006
PDF: 9 pages
Proc. SPIE 6212, Terahertz for Military and Security Applications IV, 62120N (19 May 2006); doi: 10.1117/12.666669
Show Author Affiliations
Xu Xie, Rensselaer Polytechnic Institute (United States)
Jianming Dai, Rensselaer Polytechnic Institute (United States)
Masashi Yamaguchi, Rensselaer Polytechnic Institute (United States)
X.-C. Zhang, Rensselaer Polytechnic Institute (United States)

Published in SPIE Proceedings Vol. 6212:
Terahertz for Military and Security Applications IV
Dwight L. Woolard; R. Jennifer Hwu; Mark J. Rosker; James O. Jensen, Editor(s)

© SPIE. Terms of Use
Back to Top