Regensburg 2025 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 39: Poster III

HL 39.15: Poster

Mittwoch, 19. März 2025, 15:00–18:00, P3

Calibration methods in Raman spectroscopy — •Susanne Moritz, Ron Hildebrandt, Chris Sturm, and Marius Grundmann — Felix Bloch Institute for Solid State Physics, Leipzig University, Leipzig, Germany

For low symmetry materials, polarization resolved measurements are required for a precise investigation, especially of the Raman tensor [1, 2]. Here we present strategies for calibrating and determining the polarization state of the incident and scattered light. In addition to the polarizing optics, e.g. polarizers, we also consider the impact of all involved optical elements such as mirrors and beam splitters. We show, that these non-idealities can have an impact on the determined Raman tensor elements. Taken into account the non-idealities of the polarizing optics the uncertainty of the deduced tensor elements can be reduced by 20%.

[1] C. Kranert et al., Phys. Rev. Lett. 116, 127401 (2016).

[2] C. Kranert et al., Sci. Rep. 6, 35964 (2016).

Keywords: Raman spectroscopy; Polarisation