title: Proposal for intense attosecond radiation from an x-ray free-electron laser.
abstract: We propose the use of an ultrarelativistic electron beam interacting with a few-cycle, intense laser pulse and an intense pulse of the coherent x rays to produce a multi-MW intensity, x-ray pulses approximately 100 attoseconds in duration. Because of a naturally occurring frequency chirp, these pulses can be further temporally compressed.
authors.affiliation: Lawrence Berkeley National Laboratory, Berkeley, California 94720-8211, USA.
authors.forename: Alexander A
authors.initials: AA
authors.lastname: Zholents
authors.forename: William M
authors.initials: WM
authors.lastname: Fawley