A significant enhancement of the terahertz generation efficiency via two-color laser-induced air ionization, up to 10-3, is observed with increasing pump wavelength. Terahertz peak fields up to 4.4 MV/cm were obtained using 400 μJ pulse energy. © 2013 The Optical Society.
A scaling mechanism for increasing the terahertz emission from ionization of air
Clerici M.;Caspani L.;Lotti A.;Faccio D.;
2013-01-01
Abstract
A significant enhancement of the terahertz generation efficiency via two-color laser-induced air ionization, up to 10-3, is observed with increasing pump wavelength. Terahertz peak fields up to 4.4 MV/cm were obtained using 400 μJ pulse energy. © 2013 The Optical Society.
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