Four-wave interaction in gas and vacuum: definition of a third-order nonlinear effective susceptibility in vacuum: χvacuum3Report as inadecuate




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1 LLR - Laboratoire Leprince-Ringuet 2 ENS Cachan - École normale supérieure - Cachan

Abstract : Semiclassical methods are used to study the nonlinear interaction of light in vacuum in the context of four wave mixing. This study is motivated by a desire to investigate the possibility of using recently developed powerful ultrashort femtosecond laser pulses to demonstrate the existence of nonlinear effects in vacuum, predicted by quantum electrodynamics QED. An approach, similar to classical nonlinear optics in a medium, is developed in this article. A third-order nonlinear effective susceptibility of vacuum is then introduced.

Keywords : Light-by-light interaction Four-wave mixing Third-order nonlinear susceptibility Vacuum interaction Optical phase conjugation





Author: Denis Bernard - Frederic Moulin -

Source: https://hal.archives-ouvertes.fr/



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