TRR 142 - Widely non-defenerate stimulated two-photon emission in semiconductors (A07)

Overview

Two-photon emission is a process in which optical transitions occur through the simultaneous emission of two photons. Here, we will focus on experimental and theoretical studies of widely non-degenerate two-photon emission stimulated by femtosecond pulses. Similar to nonlinear optical absorptions, such processes are expected to be massively enhanced whenever the involved fields differ widely in their frequency. Specifically, we want to investigate non-degenerate two-photon emission in various optically pumped semiconductors (GaAs, GaN, ZnO, Cu2O) as a function of the frequency ratio of the driving signal and idler field and, thereby, elucidate a novel type of optical nonlinearity in semiconductors.

Key Facts

Research profile area:
Optoelectronics and Photonics
Project type:
Research
Project duration:
04/2018 - 12/2021
Funded by:
DFG
Website:
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Principal Investigators

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Prof. Dr. Torsten Meier

Computational Optoelectronics and Photonics

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Markus Betz

Technische Universität Dortmund

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Claudia Ruppert

Technische Universität Dortmund

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Publications

Microscopic simulations of high harmonic generation from semiconductors
A. Trautmann, R. Zuo, G. Wang, W.-R. Hannes, S. Yang, L.H. Thong, C. Ngo, J. Steiner, M. Ciappina, M. Reichelt, H.T. Duc, X. Song, W. Yang, T. Meier, in: M. Betz, A.Y. Elezzabi (Eds.), Ultrafast Phenomena and Nanophotonics XXVI, 2022.
DOI
Influence of Plasmon Resonances and Symmetry Effects on Second Harmonic Generation in WS2–Plasmonic Hybrid Metasurfaces
F. Spreyer, C. Ruppert, P. Georgi, T. Zentgraf, ACS Nano 15 (2021) 16719–16728.
DOI
Neighboring Atom Collisions in Solid-State High Harmonic Generation
R. Zuo, A. Trautmann, G. Wang, W.-R. Hannes, S. Yang, X. Song, T. Meier, M. Ciappina, H.T. Duc, W. Yang, Ultrafast Science 2021 (2021).
DOI
Nondegenerate two-photon absorption in ZnSe: Experiment and theory
L. Krauss-Kodytek, W.-R. Hannes, T. Meier, C. Ruppert, M. Betz, Physical Review B 104 (2021).
DOI
Nondegenerate two-photon absorption in ZnSe: Experiment and theory
L. Krauss-Kodytek, W.-R. Hannes, T. Meier, C. Ruppert, M. Betz, Physical Review B 104 (2021).
DOI
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