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Journal Articles

Optically induced strong intermodal coupling in mechanical resonators at room temperature

R. Ohta, H. Okamoto, R. Hey, K. J. Friedland, H. Yamaguchi
Journal: Applied Physics Letters
Appl. Phys. Lett. 107, 091906 (2015)
https://doi.org/10.1063/1.4930149
Published: September 2015
View article titled, Optically induced strong intermodal coupling in mechanical resonators at room temperature
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Journal Articles

Electrically tunable electron spin lifetimes in GaAs(111)B quantum wells

K. Biermann, A. Hernández-Mínguez, R. Hey, P. V. Santos
Journal: Journal of Applied Physics
J. Appl. Phys. 112, 083913 (2012)
https://doi.org/10.1063/1.4759241
Published: October 2012
View article titled, Electrically tunable electron spin lifetimes in GaAs(111)B quantum wells
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Journal Articles

Terahertz wavefront measurement with a Hartmann sensor

H. Richter, M. Greiner-Bär, N. Deßmann, J. Pfund, M. Wienold, L. Schrottke, R. Hey, H. T. Grahn, H.-W. Hübers
Journal: Applied Physics Letters
Appl. Phys. Lett. 101, 031103 (2012)
https://doi.org/10.1063/1.4737164
Published: July 2012
View article titled, Terahertz wavefront measurement with a Hartmann sensor
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Journal Articles

Interface properties of (In,Ga)As/GaAs quantum wells grown by solid-phase epitaxy

E. Luna, R. Hey, A. Trampert
Journal: Journal of Vacuum Science & Technology B
J. Vac. Sci. Technol. B 30, 02B108 (2012)
https://doi.org/10.1116/1.3672022
Published: December 2011
View article titled, Interface properties of (In,Ga)As/GaAs quantum wells grown by solid-phase epitaxy
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Journal Articles

Polariton Condensation In One‐ And Two‐ Dimensional Acoustic Lattices

E. A. Cerda‐Méndez, D. N. Krizhanovskii, K. Biermann, M. Wouters, R. Hey, P. V. Santos, M. S. Skolnick
Journal: AIP Conference Proceedings
AIP Conf. Proc. 1399, 1031–1032 (2011)
https://doi.org/10.1063/1.3666731
Published: December 2011
View article titled, Polariton Condensation In One‐ And Two‐ Dimensional Acoustic Lattices
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Journal Articles

Acoustically‐driven Single Photon Sources on (311)A GaAs

S. Lazić, O. D. D. Couto, F. Iikawa, J. A. H. Stotz, R. Hey, P. V. Santos
Journal: AIP Conference Proceedings
AIP Conf. Proc. 1399, 1035–1036 (2011)
https://doi.org/10.1063/1.3666732
Published: December 2011
View article titled, Acoustically‐driven Single Photon Sources on (311)A GaAs
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Journal Articles

Mid-infrared pump-related electric-field domains in GaAs/(Al,Ga)As quantum-cascade structures for terahertz lasing without population inversion

M. Giehler, M. Wienold, L. Schrottke, R. Hey, H. T. Grahn, S. G. Pavlov, H.-W. Hübers, S. Winnerl, H. Schneider
Journal: Journal of Applied Physics
J. Appl. Phys. 110, 103104 (2011)
https://doi.org/10.1063/1.3660676
Published: November 2011
View article titled, Mid-infrared pump-related electric-field domains in GaAs/(Al,Ga)As quantum-cascade structures for terahertz lasing without population inversion
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Journal Articles

Effect of stimulated emission on the transport characteristics of terahertz quantum-cascade lasers

R. Sharma, L. Schrottke, M. Wienold, K. Biermann, R. Hey, H. T. Grahn
Journal: Applied Physics Letters
Appl. Phys. Lett. 99, 151116 (2011)
https://doi.org/10.1063/1.3653262
Published: October 2011
View article titled, Effect of stimulated emission on the transport characteristics of terahertz quantum-cascade lasers
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Journal Articles

Multi-channel terahertz grating spectrometer with quantum-cascade laser and microbolometer array

R. Eichholz, H. Richter, S. G. Pavlov, M. Wienold, L. Schrottke, R. Hey, H. T. Grahn, H.-W. Hübers
Journal: Applied Physics Letters
Appl. Phys. Lett. 99, 141112 (2011)
https://doi.org/10.1063/1.3645635
Published: October 2011
View article titled, Multi-channel terahertz grating spectrometer with quantum-cascade laser and microbolometer array
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Journal Articles

Nonlinear transport in quantum-cascade lasers: The role of electric-field domain formation for the laser characteristics

M. Wienold, L. Schrottke, M. Giehler, R. Hey, H. T. Grahn
Journal: Journal of Applied Physics
J. Appl. Phys. 109, 073112 (2011)
https://doi.org/10.1063/1.3573504
Published: April 2011
View article titled, Nonlinear transport in quantum-cascade lasers: The role of electric-field domain formation for the laser characteristics
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Journal Articles

Kerr detection of acoustic spin transport in GaAs (110) quantum wells

A. Hernández-Mínguez, K. Biermann, S. Lazić, R. Hey, P. V. Santos
Journal: Applied Physics Letters
Appl. Phys. Lett. 97, 242110 (2010)
https://doi.org/10.1063/1.3524218
Published: December 2010
View article titled, Kerr detection of acoustic spin transport in GaAs (110) quantum wells
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Journal Articles

Analysis of the slope efficiency for terahertz quantum-cascade lasers

L. Schrottke, M. Wienold, M. Giehler, R. Hey, H. T. Grahn
Journal: Journal of Applied Physics
J. Appl. Phys. 108, 103108 (2010)
https://doi.org/10.1063/1.3511470
Published: November 2010
View article titled, Analysis of the slope efficiency for terahertz quantum-cascade lasers
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Journal Articles

Low-threshold terahertz quantum-cascade lasers based on GaAs / Al 0.25 Ga 0.75 As heterostructures

M. Wienold, L. Schrottke, M. Giehler, R. Hey, W. Anders, H. T. Grahn
Journal: Applied Physics Letters
Appl. Phys. Lett. 97, 071113 (2010)
https://doi.org/10.1063/1.3480406
Published: August 2010
View article titled, Low-threshold terahertz quantum-cascade lasers based on GaAs / Al 0.25 Ga 0.75 As heterostructures
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Journal Articles

Local disordering in epitaxially strained CoAl films grown on GaAs (001)

Q. Wan, R. Hey, A. Trampert
Journal: Journal of Applied Physics
J. Appl. Phys. 108, 033518 (2010)
https://doi.org/10.1063/1.3457842
Published: August 2010
View article titled, Local disordering in epitaxially strained CoAl films grown on GaAs (001)
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Journal Articles

Electronic channels for acoustic transport in semiconductor heterostructures

K. Biermann, O. D. D. Couto, Jr., W. Seidel, R. Hey, P. V. Santos
Journal: Applied Physics Letters
Appl. Phys. Lett. 96, 162106 (2010)
https://doi.org/10.1063/1.3407672
Published: April 2010
View article titled, Electronic channels for acoustic transport in semiconductor heterostructures
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Journal Articles

Optical Γ 6 →Γ 8 Free‐to‐Bound Transition in Acceptor δ‐doped Single Heterostructure—Theoretical Analysis

R. Buczko, J. Łusakowski, K.‐J. Friedland, R. Hey, K. Ploog
Journal: AIP Conference Proceedings
AIP Conf. Proc. 1199, 205–206 (2010)
https://doi.org/10.1063/1.3295370
Published: January 2010
View article titled, Optical Γ 6 →Γ 8 Free‐to‐Bound Transition in Acceptor δ‐doped Single Heterostructure—Theoretical Analysis
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Journal Articles

Exchange driven spin splitting of fully occupied Landau levels measured using polarization resolved photoluminescence spectroscopy

K. Kowalik, F. J. Teran, P. Plochocka, J. Kunc, D. K. Maude, M. Potemski, K. J. Friedland, R. Hey, K. H. Ploog, G. Karczewski, T. Wojtowicz
Journal: AIP Conference Proceedings
AIP Conf. Proc. 1199, 249–250 (2010)
https://doi.org/10.1063/1.3295393
Published: January 2010
View article titled, Exchange driven spin splitting of fully occupied Landau levels measured using polarization resolved photoluminescence spectroscopy
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Journal Articles

Electrical detection of ambipolar acoustic carrier transport by surface acoustic waves

S. J. Jiao, P. D. Batista, K. Biermann, R. Hey, P. V. Santos
Journal: Journal of Applied Physics
J. Appl. Phys. 106, 053708 (2009)
https://doi.org/10.1063/1.3211861
Published: September 2009
View article titled, Electrical detection of ambipolar acoustic carrier transport by surface acoustic waves
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Journal Articles

Efficient electrical detection of ambipolar acoustic transport in GaAs

P. D. Batista, R. Hey, P. V. Santos
Journal: Applied Physics Letters
Appl. Phys. Lett. 92, 262108 (2008)
https://doi.org/10.1063/1.2955522
Published: July 2008
View article titled, Efficient electrical detection of ambipolar acoustic transport in GaAs
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Journal Articles

Suppression of longitudinal modes in two-sectioned, coupled-cavity Ga As ∕ ( Al , Ga ) As terahertz quantum-cascade lasers

M. Giehler, H. Kostial, R. Hey, H. T. Grahn
Journal: Applied Physics Letters
Appl. Phys. Lett. 91, 161102 (2007)
https://doi.org/10.1063/1.2794008
Published: October 2007
View article titled, Suppression of longitudinal modes in two-sectioned, coupled-cavity Ga As ∕ ( Al , Ga ) As terahertz quantum-cascade lasers
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