Isolated broadband attosecond pulse generation with near- and mid-infrared driver pulses via time-gated phase matching
Title: Isolated broadband attosecond pulse generation with near- and mid-infrared driver pulses via time-gated phase matching
Author(s): C. Hernández-García, T. Popmintchev, M. M. Murnane, H. C. Kapteyn, L. Plaja, A. Becker, and A. Jaron-Becker.
Times cited
Isolated broadband attosecond pulse generation with near- and mid-infrared driver pulses via time-gated phase matching
Abstract
We present a theoretical analysis of the time-gated phase matching (ionization gating) mechanism in high-order harmonic generation for the isolation of attosecond pulses at near-infrared and mid-infrared driver wavelengths, for both few-cycle and multi-cycle driving laser pulses. Results of our high harmonic generation and three-dimensional propagation simulations show that broadband isolated pulses spanning from the extreme-ultraviolet well into the soft X-ray region of the spectrum can be generated for both few-cycle and multi-cycle laser pulses. We demonstrate the key role of absorption and group velocity matching for generating bright, isolated, attosecond pulses using long wavelength multi-cycle pulses. Finally, we show that this technique is robust against carrier-envelope phase and peak intensity variations.
