Spatio-temporal cleaning of a femtosecond laser pulse through interaction with counter-propagating filaments in air

Abstract : We demonstrate spatiotemporal cleaning of a femtosecond laser pulse impinging on two counterpropagating filaments in air. The retroreflected signal essentially has a perfect beam profile. Prepulses present in the incident pulse are also efficiently removed. The performance of the “filament mirror” is explained by a plasma-mediated wave mixing process that can be viewed as a transient three-dimensional hologram.
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Amélie Jarnac, Magali Durand, Aurélien Houard, Yi Liu, Bernard Prade, et al.. Spatio-temporal cleaning of a femtosecond laser pulse through interaction with counter-propagating filaments in air. Physical Review A, American Physical Society, 2014, 89, pp.023844. ⟨10.1103/PhysRevA.89.023844⟩. ⟨hal-01118122⟩

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