D
Dietmar Fröhlich
Researcher at Technical University of Dortmund
Publications - 174
Citations - 5571
Dietmar Fröhlich is an academic researcher from Technical University of Dortmund. The author has contributed to research in topics: Exciton & Polariton. The author has an hindex of 33, co-authored 174 publications receiving 5247 citations. Previous affiliations of Dietmar Fröhlich include Cornell University.
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Observation of coupled magnetic and electric domains
TL;DR: Spatial maps of coupled antiferromagnetic and ferroelectric domains in YMnO3 are obtained by imaging with optical second harmonic generation and lead to a configuration that is dominated by the ferroelectromagnetic product of the order parameters.
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Determination of the Magnetic Symmetry of Hexagonal Manganites by Second Harmonic Generation
Manfred Fiebig,Dietmar Fröhlich,Kay Kohn,S. Leute,Thomas Lottermoser,Victor V. Pavlov,Roman V. Pisarev +6 more
TL;DR: Optical second harmonic spectroscopy is introduced as a powerful supplement for the determination of complex magnetic structures and some earlier conclusions on their magnetic symmetry and properties should be revised.
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Giant Rydberg excitons in the copper oxide Cu2O.
Tomasz Kazimierczuk,Dietmar Fröhlich,Stefan Scheel,Heinrich Stolz,Manfred Bayer,Manfred Bayer +5 more
TL;DR: The existence of Rydberg excitons in the copper oxide Cu2O, with principal quantum numbers as large as n = 25, is demonstrated, which may allow the formation of ordered exciton phases or the sensing of elementary excitations in their surroundings on a quantum level.
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Second harmonic generation and magnetic-dipole-electric-dipole interference in antiferromagnetic Cr2O3.
TL;DR: This paper presents a novel tool to study antiferromagnetic domains with opposite orientation of the order parameter, which leads to a pronounced polarization dependence for circularly polarized light propagating along the optical axis.
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Coherent propagation and quantum beats of quadrupole polaritons in Cu2O.
TL;DR: Oscillations with time-dependent period in the transmitted light intensity are quantitatively explained as resulting from quantum beats between the two branches of the exciton polariton.