Abstract
Compact high harmonic generation (HHG) systems as affordable tabletop coherent XUV sources are becoming increasingly popular in the last years. Currently, the most successful approaches are based on nonlinearly-compressed chirped-pulse fibre amplifier sources [1,2] or passive femtosecond enhancement cavities [3]. We develop an alternative approach based on driving HHG directly inside an ultrafast thin-disk laser (TDL) oscillator [4]. This concept offers a low-complexity single-stage solution neither requiring external nonlinear pulse compression or chirped-pulse amplification, nor coherent coupling into an external femtosecond enhancement cavity.
© 2023 IEEE
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