Attosecond pulse walk-off in high-order harmonic generation.
نویسندگان
چکیده
We study the influence of the generation conditions on the group delay of attosecond pulses in high-order harmonic generation in gases. The group delay relative to the fundamental field is found to decrease with increasing gas pressure in the generation cell, reflecting a temporal walk-off due to the dispersive properties of the nonlinear medium. This effect is well reproduced using an on-axis phase-matching model of high-order harmonic generation in an absorbing gas.
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ورودعنوان ژورنال:
- Optics letters
دوره 39 7 شماره
صفحات -
تاریخ انتشار 2014