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Journal articles
Coherent subterahertz radiation from femtosecond infrared filaments in air
Abstract : We report on what is believed to be the first observation of coherent subterahertz (sub-THz) emission from a 1-m string in the atmosphere. The sub-THz pulse emitted by the filamentary structure from an intense IR femtosecond laser pulse is detected perpendicularly to the laser propagation axis by use of two heterodyne detectors at 94±1 and 118±1GHz . We describe the characteristics of this emission and show evidence of constructive interference between two separate strings.
Keywords :
filamentation
terahertz
https://hal-polytechnique.archives-ouvertes.fr/hal-00463674
Contributor : Aurélien Houard Connect in order to contact the contributor
Submitted on : Sunday, March 14, 2010 - 1:59:44 PM
Last modification on : Friday, December 3, 2021 - 11:34:03 AM
Contributor : Aurélien Houard Connect in order to contact the contributor
Submitted on : Sunday, March 14, 2010 - 1:59:44 PM
Last modification on : Friday, December 3, 2021 - 11:34:03 AM