Tunable high-order frequency mixing for XUV transient absorption and photoelectron spectroscopies
AffiliationUniv Arizona, Coll Opt Sci
Univ Arizona, Dept Phys
MetadataShow full item record
PublisherOPTICAL SOC AMER
CitationHarkema, N., Plunkett, A., & Sandhu, A. (2019). Tunable high-order frequency mixing for XUV transient absorption and photoelectron spectroscopies. Optics Express, 27(21), 31053-31061.
RightsCopyright © 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
Collection InformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at firstname.lastname@example.org.
AbstractWe generate tunable extreme ultraviolet emission through high-order frequency mixing between a strong near-infrared field and a weak shortwave-infrared pulse whose wavelength can be adjusted. In this two-color driving scheme, new harmonics appear in between the single-color harmonics at energies which are linear combinations of photons from the two pulses. We demonstrate the utility of tunable two-color harmonics by employing them for XUV transient absorption spectroscopy and time-resolved photoelectron spectroscopy. We show that the two-color harmonics can be used to address the dynamics associated with excited states in Helium and Oxygen which are inaccessible using single-color harmonics. Specifically, we show the ability to switch between excitation of 3p and 4p states in Helium, control of transitions to the light induced states, observe new four-wave-mixing emissions, and selectively address different principal and vibrational quantum numbers associated with Oxygen Rydberg states. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
NoteOpen access journal
VersionFinal published version
SponsorsOffice of Science, Basic Energy Sciences, United States Department of Energy (DOE) [DE-SC0018251]