Plasmonkontrolle mit THz Pulsen
Optik, Quantenoptik und Physik der Atome, Moleküle und Plasmen
Theoretische Physik der kondensierten Materie
Zusammenfassung der Projektergebnisse
The main aim of the project was the use of strong THz electric-fields to modify the charge density in nanoparticles and to realize a fast and efficient control of optical plasmons in gold nanoparticles. The project funded two doctoral researchers, a broad range of experiments was conducted and a new theory was developed. The main observation motivating the project could not be reproduced with the new setup. Probably due to past artifacts in the complicated experiment. However, the investigation of the interaction of strong THz pulses with gold led to the observation of new, fundamental effects and motivated the development of a new theory that represents an improved fundamental understanding of plasmon dynamics and which already enabled the explanation of recent experimental observations.
Link zum Abschlussbericht
https://doi.org/10.34657/22442
Projektbezogene Publikationen (Auswahl)
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Terahertz-Induced Energy Transfer from Hot Carriers to Trions in a MoSe2 Monolayer. ACS Photonics, 8(10), 2931-2939.
Venanzi, Tommaso; Selig, Malte; Winnerl, Stephan; Pashkin, Alexej; Knorr, Andreas; Helm, Manfred & Schneider, Harald
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Impact of pump beam spot size on semiconductor carrier dynamics in optical-pump-terahertz-probe spectroscopy. Journal of the Optical Society of America B, 40(8), 2058.
Staechelin, Yannic U.; Kroh, Tobias; Kärtner, Franz X. & Lange, Holger
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Theory of radial oscillations in metal nanoparticles driven by optically induced electron density gradients. The Journal of Chemical Physics, 158(6).
Salzwedel, Robert; Knorr, Andreas; Hoeing, Dominik; Lange, Holger & Selig, Malte
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Time-Resolved Single-Particle X-ray Scattering Reveals Electron-Density Gradients As Coherent Plasmonic-Nanoparticle-Oscillation Source. Nano Letters, 23(13), 5943-5950.
Hoeing, Dominik; Salzwedel, Robert; Worbs, Lena; Zhuang, Yulong; Samanta, Amit K.; Lübke, Jannik; Estillore, Armando D.; Dlugolecki, Karol; Passow, Christopher; Erk, Benjamin; Ekanayake, Nagitha; Ramm, Daniel; Correa, Jonathan; Papadopoulou, Christina C.; Noor, Atia Tul; Schulz, Florian; Selig, Malte; Knorr, Andreas; Ayyer, Kartik ... & Lange, Holger
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Spatial exciton localization at interfaces of metal nanoparticles and atomically thin semiconductors. Physical Review B, 109(3).
Salzwedel, Robert; Greten, Lara; Schmidt, Stefan; Hughes, Stephen; Knorr, Andreas & Selig, Malte
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Strong Coupling of Two-Dimensional Excitons and Plasmonic Photonic Crystals: Microscopic Theory Reveals Triplet Spectra. ACS Photonics, 11(4), 1396-1411.
Greten, Lara; Salzwedel, Robert; Göde, Tobias; Greten, David; Reich, Stephanie; Hughes, Stephen; Selig, Malte & Knorr, Andreas
