Regensburg 2022 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 33: Poster Tuesday: Ultrafast Processes 2
O 33.5: Poster
Dienstag, 6. September 2022, 11:00–13:00, P3
LabVIEW based software solution for tr-ARPES experiments — •Johannes Gradl1, Niklas Hofmann1, Leonard Weigl1, Yu Zhang2, Cephise Cacho3, Neeraj Mishra4,5, Stiven Forti4, Camilla Coletti4,5, and Isabella Gierz1 — 1Department of Physics, University of Regensburg, 93040 Regensburg, Germany — 2Central Laser Facility, STFC Rutherford Appleton Laboratory, Harwell Campus, Didcot OX11 0DE, United Kingdom — 3Diamond Light Source, Harwell Campus, Didcot OX11 0DE, United Kingdom — 4Center for Nanotechnology Innovation @NEST, Istituto Italiano di Tecnologia, 56127 Pisa, Italy — 5Graphene Labs, Istituto Italiano di Tecnologia, 16163 Genova, Italy
Time- and angle-resolved photoemission spectroscopy (tr-ARPES) is an experimental technique used for visualizing non-equilibrium carrier dynamics as well as transient band structures of photoexcited samples as a function of energy, momentum, and time. A tr-ARPES setup ideally includes femtosecond pump pulses with tunable photon energy, femtosecond extreme ultraviolet probe pulses an ultrahigh vacuum chamber equipped with a cryo-cooled sample manipulator and a photoelectron analyzer as well as additional features for in situ sample preparation and characterization. In addition to this hardware, the execution of tr-ARPES experiments requires a user-friendly software for hardware control, data acquisition, and real time data visualization. We will present our LabVIEW based software solution and demonstrate its successful implementation with a series of data sets from a WS2/graphene van der Waals heterostructure.