Filamentation in a semi-infinite gas cell compresses a few-cycle 1030 nm driver and generates isolated attosecond pulses in argon, neon, and helium, with measured durations down to 65 as.
A spatial beam splitter was used to divide the IR beam into central and annular parts
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Filamentation-Assisted Isolated Attosecond Pulse Generation
Filamentation in a semi-infinite gas cell compresses a few-cycle 1030 nm driver and generates isolated attosecond pulses in argon, neon, and helium, with measured durations down to 65 as.