High-Power Broadband Terahertz Generation via Two-Color Photoionization in Gases

We review high-energy, broadband terahertz (THz) generation in two-color laser-produced gaseous plasma. We first describe our microscopic plasma current model for directional plasma current and far-field THz radiation generation. Experimental results for THz yield dependence on laser energy, optical...

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Bibliographic Details
Published in:IEEE journal of quantum electronics 2012-06, Vol.48 (6), p.797-805
Main Authors: Ki-Yong Kim, Glownia, J. H., Taylor, A. J., Rodriguez, G.
Format: Article
Language:English
Subjects:
Bandwidth
Broadband
Broadband communication
Broadband THz sources
coherent control
Computer simulation
Gas lasers
high-power THz sources
Ionization
laser-produced plasma
Lasers
Mathematical models
Photoionization
Plasma currents
Plasmas
Polarization
Quantum electronics
Ultrafast optics
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Summary:We review high-energy, broadband terahertz (THz) generation in two-color laser-produced gaseous plasma. We first describe our microscopic plasma current model for directional plasma current and far-field THz radiation generation. Experimental results for THz yield dependence on laser energy, optical phase difference, gas species, and gas pressure are presented. We also describe ultrabroadband THz generation and detection in our experiments and numerical simulations. Finally, we discuss 2-D plasma currents for THz polarization control and macroscopic phase-matched THz generation.
ISSN:0018-9197
1558-1713
DOI:10.1109/JQE.2012.2190586