TRR 142 - Tailored ultrafast acoustics for light emission modulation (A06)


The interaction of coherent acoustic phonons and excitons in low-dimensional semiconductor structures is in the focus of this project proposal. In the experiments, picosecond strain pulses are sent through the nanostructure. The response on the ultrafast acoustic impact is monitored through the light emission and tailored by nanoscale adjustment of the optical and elastic properties. In the next funding period, we aim at challenging goals, namely to achieve quantum efficiency in counting acoustic phonons using exciton polaritons in a multi-quantum-well structure, to obtain spatially distributed switching of a bi-stable polariton condensate in a microcavity, and to detect modulation of the exciton resonances in transition metal dichalcogenides heterostructures.

Key Facts

Research profile area:
Optoelectronics and Photonics
Project type:
Project duration:
04/2014 - 12/2025
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Principal Investigators

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Prof. Dr. Donat Josef As

Optoelectronic Semiconductors - Group III-Nitrides

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Prof. Dr. Dirk Reuter

Optoelectronic materials and devices

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Dr. Alexey Scherbakov

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Manfred Bayer

Technische Universität Dortmund

Cooperating Institutions

TU Dortmund

Cooperating Institution


Remote epitaxy of In(x)Ga(1-x)As(001) on graphene covered GaAs(001) substrates
T. Henksmeier, J.F. Schulz, E. Kluth, M. Feneberg, R. Goldhahn, A.M. Sanchez, M. Voigt, G. Grundmeier, D. Reuter, Journal of Crystal Growth 593 (2022).
Selective Etching of (111)B-Oriented AlxGa1−xAs-Layers for Epitaxial Lift-Off
T. Henksmeier, M. Eppinger, B. Reineke, T. Zentgraf, C. Meier, D. Reuter, Physica Status Solidi (A) 218 (2021) 2000408.
Extremely low-energy ARPES of quantum well states in cubic-GaN/AlN and GaAs/AlGaAs heterostructures
M. Hajlaoui, S. Ponzoni, M. Deppe, T. Henksmeier, D.J. As, D. Reuter, T. Zentgraf, G. Springholz, C.M. Schneider, S. Cramm, M. Cinchetti, Scientific Reports 11 (2021).
Stacked Self-Assembled Cubic GaN Quantum Dots Grown by Molecular Beam Epitaxy
S. Blumenthal, T. Rieger, D. Meertens, A. Pawlis, D. Reuter, D.J. As, Physica Status Solidi (b) 255 (2018) 1600729.
Systematic study of the influence of coherent phonon wave packets on the lasing properties of a quantum dot ensemble
D. Wigger, T. Czerniuk, D.E. Reiter, M. Bayer, T. Kuhn, New Journal of Physics 19 (2017).
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