Regensburg 2025 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 15: Poster Session I

CPP 15.61: Poster

Montag, 17. März 2025, 19:00–21:00, P4

Single-molecule spectroscopy of organic laser gain media — •Janne Becker, Robert Schmidt, Steffen Michaelis de Vasconcellos, and Rudolf Bratschitsch — Institute of Physics, University of Münster, Germany

Since the first experiments on pentacene [1], single-molecule spectroscopy has been performed for applications ranging from cell biology and medicine to organic laser media and single-photon emission [2]. To design and use these specialized molecules, their photophysical properties have to be investigated. Here, we perform single-molecule spectroscopy to study organic laser gain media. To isolate single molecules, we dilute the organic material down to concentrations of the order of nmol/L with ultra-pure solvents and measure characteristic fluorescence lifetimes and spectra.

References:

[1] W. E. Moerner and L. Kador, Physical Review Letters, 62, 2535. (1989)

[2] H. Miller et al, Rep. Prog. Phys. 81 024601 (2018)

Keywords: Laser gain media; Single-molecules; Fluorescence