Broadband xuv supercontinuum generation via controlling quantum paths by a low-frequency field
Abstract
We propose a method to generate broadband extreme ultraviolet supercontinuum harmonics by using the combination of a phase-stabilized few-cycle laser pulse and a low-frequency field. It is shown that this method can significantly modulate the quantum paths of the harmonics. The harmonic spectrum is extended to Ip+8.2Up and harmonics with a bandwidth of 4Up become continuous. By adjusting the carrier-envelope phase of the few-cycle pulse, a close-to-Fourier-limit sub-50-as pulse is straightforwardly obtained.
- Publication:
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Physical Review A
- Pub Date:
- March 2008
- DOI:
- Bibcode:
- 2008PhRvA..77c3410H
- Keywords:
-
- 33.80.Wz;
- 42.65.Ky;
- 42.65.Re;
- Other multiphoton processes;
- Frequency conversion;
- harmonic generation including higher-order harmonic generation;
- Ultrafast processes;
- optical pulse generation and pulse compression