SKM 2023 – wissenschaftliches Programm
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KFM: Fachverband Kristalline Festkörper und deren Mikrostruktur
KFM 3: Instrumentation and Methods for Micro- and Nanoanalysis (joint session KFM/CPP)
KFM 3.1: Vortrag
Montag, 27. März 2023, 14:30–14:50, POT 106
The Hitchhiker's Guide to BCARS on Solid-State Single Crystals — •Franz Hempel1, Lukas König1, Federico Vernuccio2, Dario Polli2, Giulio Cerullo2, Michael Rüsing1, and Lukas Matthias Eng1,3 — 1Institut für Angewandte Physik, TU Dresden, 01187 Dresden, Germany — 2Physics Department, Politecnico di Milano, 20133 Milano, Italy — 3ct.qmat: Dresden-Würzburg Cluster of Excellence - EXC 2147, TU Dresden, 01062 Dresden, Germany
Broadband coherent anti-Stokes Raman scattering (BCARS) is an advanced Raman- spectroscopy technique that offers high-speed hyperspectral imaging and is so far widely applied in the biomedical field. For crystalline materials and their high-precision analysis, however, additional aspects of phase-matching, scattering direction, and background removal delicately need to be taken into account. To prove the reproducibility of BCARS results and pinpoint setup-related influences, we have performed a comparison study using (a) two different setups, and (b) comparing transmission with epi-detection BCARS experiments. A broad set of solid-state crystalline materials with increasing complexity was analyzed, achieving comparable, background-free spectra. Also, each machine allows the specification of optimum laser and setup parameters for inspecting the different samples.