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Journal Articles

Long-term stability of GaAs/AlAs terahertz quantum-cascade lasers

L. Schrottke, X. Lü, K. Biermann, P. Gellie, H. T. Grahn
Journal: AIP Advances
AIP Advances 12, 085122 (2022)
https://doi.org/10.1063/5.0098782
Published: August 2022
View article titled, Long-term stability of GaAs/AlAs terahertz quantum-cascade lasers
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Journal Articles

Terahertz quantum-cascade lasers for high-resolution spectroscopy of sharp absorption lines

B. Röben, X. Lü, K. Biermann, L. Schrottke, H. T. Grahn
Journal: Journal of Applied Physics
J. Appl. Phys. 125, 151613 (2019)
https://doi.org/10.1063/1.5079701
Published: April 2019
View article titled, Terahertz quantum-cascade lasers for high-resolution spectroscopy of sharp absorption lines
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Journal Articles

Determination of the interface parameter in terahertz quantum-cascade laser structures based on transmission electron microscopy

X. Lü, E. Luna, L. Schrottke, K. Biermann, H. T. Grahn
Journal: Applied Physics Letters
Appl. Phys. Lett. 113, 172101 (2018)
https://doi.org/10.1063/1.5042326
Published: October 2018
View article titled, Determination of the interface parameter in terahertz quantum-cascade laser structures based on transmission electron microscopy
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Journal Articles

Intrinsic frequency tuning of terahertz quantum-cascade lasers

L. Schrottke, X. Lü, B. Röben, K. Biermann, M. Wienold, H. Richter, H.-W. Hübers, H. T. Grahn
Journal: Journal of Applied Physics
J. Appl. Phys. 123, 213102 (2018)
https://doi.org/10.1063/1.5024480
Published: May 2018
View article titled, Intrinsic frequency tuning of terahertz quantum-cascade lasers
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Journal Articles

Terahertz gas spectroscopy through self-mixing in a quantum-cascade laser

T. Hagelschuer, M. Wienold, H. Richter, L. Schrottke, K. Biermann, H. T. Grahn, H.-W. Hübers
Journal: Applied Physics Letters
Appl. Phys. Lett. 109, 191101 (2016)
https://doi.org/10.1063/1.4967435
Published: November 2016
View article titled, Terahertz gas spectroscopy through self-mixing in a quantum-cascade laser
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Journal Articles

Individual electron and hole localization in submonolayer InN quantum sheets embedded in GaN

F. Feix, T. Flissikowski, C. Chèze, R. Calarco, H. T. Grahn, O. Brandt
Journal: Applied Physics Letters
Appl. Phys. Lett. 109, 042104 (2016)
https://doi.org/10.1063/1.4960006
Published: July 2016
View article titled, Individual electron and hole localization in submonolayer InN quantum sheets embedded in GaN
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Journal Articles

Real-time terahertz imaging through self-mixing in a quantum-cascade laser

M. Wienold, T. Hagelschuer, N. Rothbart, L. Schrottke, K. Biermann, H. T. Grahn, H.-W. Hübers
Journal: Applied Physics Letters
Appl. Phys. Lett. 109, 011102 (2016)
https://doi.org/10.1063/1.4955405
Published: July 2016
View article titled, Real-time terahertz imaging through self-mixing in a quantum-cascade laser
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Journal Articles

Multiple lobes in the far-field distribution of terahertz quantum-cascade lasers due to self-interference

B. Röben, M. Wienold, L. Schrottke, H. T. Grahn
Journal: AIP Advances
AIP Advances 6, 065104 (2016)
https://doi.org/10.1063/1.4953596
Published: June 2016
View article titled, Multiple lobes in the far-field distribution of terahertz quantum-cascade lasers due to self-interference
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Journal Articles

Fourier-transform-based model for carrier transport in semiconductor heterostructures: Longitudinal optical phonon scattering

X. Lü, L. Schrottke, H. T. Grahn
Journal: Journal of Applied Physics
J. Appl. Phys. 119, 214302 (2016)
https://doi.org/10.1063/1.4952741
Published: June 2016
View article titled, Fourier-transform-based model for carrier transport in semiconductor heterostructures: Longitudinal optical phonon scattering
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Journal Articles

Phenomenological scattering-rate model for the simulation of the current density and emission power in mid-infrared quantum cascade lasers

S. S. Kurlov, Y. V. Flores, M. Elagin, M. P. Semtsiv, L. Schrottke, H. T. Grahn, G. G. Tarasov, W. T. Masselink
Journal: Journal of Applied Physics
J. Appl. Phys. 119, 134501 (2016)
https://doi.org/10.1063/1.4945364
Published: April 2016
View article titled, Phenomenological scattering-rate model for the simulation of the current density and emission power in mid-infrared quantum cascade lasers
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Journal Articles

Terahertz GaAs/AlAs quantum-cascade lasers

L. Schrottke, X. Lü, G. Rozas, K. Biermann, H. T. Grahn
Journal: Applied Physics Letters
Appl. Phys. Lett. 108, 102102 (2016)
https://doi.org/10.1063/1.4943657
Published: March 2016
View article titled, Terahertz GaAs/AlAs quantum-cascade lasers
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Journal Articles

Frequency dependence of the maximum operating temperature for quantum-cascade lasers up to 5.4 THz

M. Wienold, B. Röben, X. Lü, G. Rozas, L. Schrottke, K. Biermann, H. T. Grahn
Journal: Applied Physics Letters
Appl. Phys. Lett. 107, 202101 (2015)
https://doi.org/10.1063/1.4935942
Published: November 2015
View article titled, Frequency dependence of the maximum operating temperature for quantum-cascade lasers up to 5.4 THz
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Journal Articles

Fourier transform-based scattering-rate method for self-consistent simulations of carrier transport in semiconductor heterostructures

L. Schrottke, X. Lü, H. T. Grahn
Journal: Journal of Applied Physics
J. Appl. Phys. 117, 154309 (2015)
https://doi.org/10.1063/1.4918671
Published: April 2015
View article titled, Fourier transform-based scattering-rate method for self-consistent simulations of carrier transport in semiconductor heterostructures
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Journal Articles

Efficient simulation of the impact of interface grading on the transport and optical properties of semiconductor heterostructures

X. Lü, L. Schrottke, E. Luna, H. T. Grahn
Journal: Applied Physics Letters
Appl. Phys. Lett. 104, 232106 (2014)
https://doi.org/10.1063/1.4882653
Published: June 2014
View article titled, Efficient simulation of the impact of interface grading on the transport and optical properties of semiconductor heterostructures
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Journal Articles

Rate equation model for the time dependence of the reflectance of a Ge2Te2Sb5 film during optical switching processes

F. Gericke, T. Flissikowski, F. Katmis, W. Braun, H. T. Grahn
Journal: Journal of Applied Physics
J. Appl. Phys. 113, 183507 (2013)
https://doi.org/10.1063/1.4803543
Published: May 2013
View article titled, Rate equation model for the time dependence of the reflectance of a Ge<sub>2</sub>Te<sub>2</sub>Sb<sub>5</sub> film during optical switching processes
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Journal Articles

Mid-infrared-pumped, electrically driven terahertz quantum laser: Enhanced pumping efficiency and prevention of electric-field domains

X. Lü, M. Wienold, L. Schrottke, K. Biermann, H. T. Grahn
Journal: Journal of Applied Physics
J. Appl. Phys. 113, 033103 (2013)
https://doi.org/10.1063/1.4776762
Published: January 2013
View article titled, Mid-infrared-pumped, electrically driven terahertz quantum laser: Enhanced pumping efficiency and prevention of electric-field domains
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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

Optical switching and related structural properties of epitaxial Ge2Sb2Te5 films

F. Gericke, T. Flissikowski, J. Lähnemann, F. Katmis, W. Braun, H. Riechert, H. T. Grahn
Journal: Journal of Applied Physics
J. Appl. Phys. 111, 113524 (2012)
https://doi.org/10.1063/1.4728221
Published: June 2012
View article titled, Optical switching and related structural properties of epitaxial Ge<sub>2</sub>Sb<sub>2</sub>Te<sub>5</sub> films
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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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