Journal
OPTICA
Volume 4, Issue 10, Pages 1298-1304Publisher
OPTICAL SOC AMER
DOI: 10.1364/OPTICA.4.001298
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Funding
- H European Research Council (ERC) ExCoMet [694596]
- European Research Council (ERC) [694596] Funding Source: European Research Council (ERC)
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Because of their broad spectral width, ultrashort lasers provide unique possibilities to shape light beams and control their properties, in particular through the use of spatio-temporal couplings. In this context, we present a theoretical investigation of the linear propagation of ultrashort laser beams that combine temporal chirp and a standard aberration known as longitudinal chromatism. When such beams are focused in a vacuum, or in a linear medium, the interplay of these two effects can be exploited to set the velocity of the resulting intensity peak to arbitrary values within the Rayleigh length, i.e., precisely where laser pulses are generally used. Such beams could find groundbreaking applications in the control of laser - matter interactions, in particular for laser-driven particle acceleration. (C) 2017 Optical Society of America
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