Media type: E-Article Title: Tunable high-order frequency mixing for XUV transient absorption and photoelectron spectroscopies Contributor: Harkema, Nathan; Plunkett, Alexander; Sandhu, Arvinder Published: Optica Publishing Group, 2019 Published in: Optics Express, 27 (2019) 21, Seite 31053 Language: English DOI: 10.1364/oe.27.031053 ISSN: 1094-4087 Origination: Footnote: Access State: Open Access