Self-guiding of ultrashort, relativistically intense laser pulses through underdense plasmas in the blowout regime.

Autor: Ralph JE; Department of Electrical Engineering, UCLA, Los Angeles, California 90095, USA., Marsh KA, Pak AE, Lu W, Clayton CE, Fang F, Mori WB, Joshi C
Jazyk: angličtina
Zdroj: Physical review letters [Phys Rev Lett] 2009 May 01; Vol. 102 (17), pp. 175003. Date of Electronic Publication: 2009 Apr 30.
DOI: 10.1103/PhysRevLett.102.175003
Abstrakt: The self-guiding of relativistically intense but ultrashort laser pulses has been experimentally investigated as a function of laser power, plasma density, and plasma length in the blowout regime. The extent of self-guiding, observed by imaging the plasma exit, is shown to be limited by nonlinear pump depletion with observed self-guiding of over tens of Rayleigh lengths. Spectrally resolved images of the plasma exit show evidence consistent with self-guiding in the plasma wake. Minimal losses of the self-guided pulse resulted when the initial spot size was matched to the blowout radius.
Databáze: MEDLINE