Coherent synthesis of terahertz radiation from femtosecond laser filaments in air

Mitryukovskiy, Sergey I.; Liu, Yi; Prade, Bernard; Houard, Aurélien; Mysyrowicz, André
June 2013
Applied Physics Letters;6/3/2013, Vol. 102 Issue 22, p221107
Academic Journal
We report on the coherent synthesis of pulsed terahertz radiation from femtosecond laser filaments organized in an array. The terahertz intensity is proportional to the square of the number of the filaments, which provides a simple method for scaling up of the terahertz energy with a powerful femtosecond laser. Moreover, directional off-axis terahertz radiation can be achieved. This paves the way for applications of this terahertz source for remote sensing.


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