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.
Domains
Optics [physics.optics]
Origin : Files produced by the author(s)
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