Abstract
The generation of isolated 80 attosecond laser pulses has almost reached its physical limitation when using established Ti:Sa schemes at 800 nm of the driving field [1]. Further shortening of attosecond pulse duration utilizing high harmonic generation (HHG) can be achieved by using few cycle pulses at longer wavelengths because the HHG cut-off shifts towards higher photon energies proportional to the square of the laser wavelength [2]. In this paper, we present (1) a simple and robust experimental approach to generate carrier envelope phase (CEP) stable quasi single cycle laser pulses at 1.8 μm and (2) HHG from Argon using those pulses.
© 2011 Optical Society of America
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