Abstract

High-harmonic generation (HHG), where the interaction of high-intensity laser light with matter generates ultrashort XUV pulses, is an attractive option for a table-top source of coherent light at nanometre wavelengths. Its efficiency can be improved by performing the HHG in a gas-filled capillary instead of the more common gas jet or cell due to improved interaction length and phase matching. However, because of the highly nonlinear interaction between pump light, neutral atoms, generated plasma, and XUV radiation in this regime, accurate computer simulations and predictions are highly complex and time consuming.

© 2015 IEEE