Rothhardt, JanJanRothhardtKrebs, ManuelManuelKrebsHädrich, SteffenSteffenHädrichDemmler, StefanStefanDemmlerLimpert, JensJensLimpertTünnermann, AndreasAndreasTünnermann2022-03-122022-03-122014https://publica.fraunhofer.de/handle/publica/3841762-s2.0-84899716705Phase-matched and absorption-limited HHG can be achieved despite tight focusing. We present theoretical considerations and observed a conversion efficiency of >10-6 in this regime of particular importance for high repetition rate sources.enconference paper