Transient interferometric scattering microscopy on nanoscale objects with high sensitivity

Konrad Birkmeier; Andreas Brodschelm; Florian Tauser; Reto Häring; Bernhard Wolfring; Achim Hartschuh

doi:10.1117/12.2668432

15 March 2023 Transient interferometric scattering microscopy on nanoscale objects with high sensitivity

Konrad Birkmeier, Andreas Brodschelm, Florian Tauser, Reto Häring, Bernhard Wolfring, Achim Hartschuh

Proceedings Volume 12410, Nanoscale and Quantum Materials: From Synthesis and Laser Processing to Applications 2023; 1241009 (2023) https://doi.org/10.1117/12.2668432
Event: SPIE LASE, 2023, San Francisco, California, United States

Abstract

We present time resolved measurements on low dimensional nanomaterials like individual (6,4) single-walled carbon nanotubes and monolayers of MoSe₂ via transient interferometric scattering (TiSCAT) microscopy. For this a novel fiber laser system was developed comprising a tunable probe arm and low noise performance. The sensitivity of the measurement is demonstrated for very low excitation powers to prevent photodamage of the sample. Signal variations close to the shot-noise limit can be resolved even with low excitation powers in the order of 1 μW. In combination with the tunability of the laser system the absorption spectrum of a single SWCNT was determined.

Conference Presentation

Citation Download Citation

Konrad Birkmeier, Andreas Brodschelm, Florian Tauser, Reto Häring, Bernhard Wolfring, and Achim Hartschuh "Transient interferometric scattering microscopy on nanoscale objects with high sensitivity", Proc. SPIE 12410, Nanoscale and Quantum Materials: From Synthesis and Laser Processing to Applications 2023, 1241009 (15 March 2023); https://doi.org/10.1117/12.2668432

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