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HL: Fachverband Halbleiterphysik

HL 26: Poster II

HL 26.53: Poster

Mittwoch, 11. März 2026, 09:30–11:30, P1

Development of single-shot spectral referencing to increase signal-to-noise ratio in broadband 2D electronic spectroscopy — •Lotte Polling, Anton Trenczek, Pavel Trofimov, Trideep Kawde, and Hélène Seiler — FU Berlin

Two-dimensional optical spectroscopy is a powerful technique for resolving couplings between electronic states. Its implementation relies on the availability of a broadband light source in the visible range, typically generated using non-collinear optical parametric amplifiers or gas-filled hollow-core fibers. These sources exhibit shot-to-shot spectral fluctuations which can be as high as 10-15% depending on the laser source. Here, we introduce a setup for single-shot spectral referencing with the end goal of significantly increasing the signal-to-noise ratio in broadband 2D electronic spectroscopy measurements.

Keywords: Shot-to-shot referencing; Two-dimensional electronic spectroscopy