Regensburg 2022 – wissenschaftliches Programm
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DS: Fachverband Dünne Schichten
DS 12: 2D Materials 4 (joint session HL/CPP/DS)
DS 12.1: Hauptvortrag
Dienstag, 6. September 2022, 09:30–10:00, H36
Ultrafast all-optical modulation and frequency conversion in 2D materials — •Sebastian Klimmer1, Artem Sinelnik1,2, Isabelle Staude1,2, and Giancarlo Soavi1 — 1Institute of Solid State Physics, Friedrich Schiller University Jena, Jena, Germany — 2Institute of Applied Physics, Friedrich Schiller University Jena, Jena, Germany
Large efforts have been devoted in the last years to realizing nonlinear integrated devices for frequency conversion, sensing, signal modulation and quantum optics. Two-dimensional (2D) materials, such as graphene and transition metal dichalcogenides (TMDs), provide distinct advantages in this respect thanks to their ease of integration on photonic platforms[1] and their atomically thin nature, which relaxes phase matching constraints and thus offers a practically unlimited bandwidth for nonlinear optical effects [2]. In this seminar I will present our recent results in the field of nonlinear optics with 2D materials, including ultra-broadband four-wave mixing in the telecom range, ultrafast all-optical modulation of second- and third-harmonic generation in TMDs[3] and graphene and ultrafast polarization-resolved second-harmonic spectroscopy to probe the valley degree of freedom in TMDs.
[1] He, J. et al., Nano Lett. 21, 7, 2709-2718 (2021)
[2] Trovatello, C. et al., Nat. Photonics. 15, 6-10 (2021)
[3] Klimmer, S. et al., Nat. Photonics. 15, 837-842 (2021)