Abstract
The relativistic self-trapping of a laser pulse is an efficient mechanism for the acceleration of electrons, whichallows one to achieve an extreme charge of a high-energy particle beam and the corresponding conversioncoefficient of laser energy. It has been shown that the compression of the femtosecond laser pulse in thisregime using the innovative compression after compressor approach (CafCA) [E.A. Khazanov,S.Yu. Mironov, and G. Mourou, Phys. Usp. 62, 1096 (2019)] to extremely short durations keeping the energyof the laser beam significantly increases the efficiency of particle acceleration. This effect has been illustratedon the example of the Multitera laser facility for the project implemented at the Russian National Center forPhysics and Mathematics.
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