Abstract
The intense few-cycle driving fields used to produce isolated attosecond pulses via high harmonic generation (HHG) [1] are typically delivered from conventional hollow fiber compressors. However, it has been suggested that individual attosecond pulses may be realized in low-pressure regions at the output of self-compressed filaments [2]. We follow a similar approach in an alternative geometry and present modelling of an elegant source of isolated attosecond pulses driven by a 40 fs near infrared (NIR) laser field. Here, ionization-induced self-compression and HHG happen in-situ within a short (40 mm) gas-filled fiber, and single 350 as pulses at a central wavelength of 13.5 nm are predicted at its exit.
© 2013 IEEE
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