Femtosecond infrared filaments in air: a source of coherent THz radiation
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abstract
We observe coherent THz emission from a 1-m plasma string produced by an IR fs laser pulse in atmosphere. The THz pulse is detected perpendicular to the laser propagation axis using heterodyne detection. 2000 Optical Society of America.
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Postconference Digest Quantum Electronics and Laser Science, 2003. QELS.