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Journal Articles

Split-disk micro-lasers: Tunable whispering gallery mode cavities

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T. Siegle, M. Remmel, S. Krämmer, H. Kalt
Journal: APL Photonics
APL Photonics 2, 096103 (2017)
https://doi.org/10.1063/1.4985766
Published: September 2017
View article titled, Split-disk micro-lasers: Tunable whispering gallery mode cavities
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Includes: Supplementary data
Journal Articles

Correlation of spectral features of photoluminescence with residual native defects of ZnO thin films annealed at different temperatures

L. M. Kukreja, P. Misra, J. Fallert, D. M. Phase, H. Kalt
Journal: Journal of Applied Physics
J. Appl. Phys. 112, 013525 (2012)
https://doi.org/10.1063/1.4730774
Published: July 2012
View article titled, Correlation of spectral features of photoluminescence with residual native defects of ZnO thin films annealed at different temperatures
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Journal Articles

Properties of Modes in ZnO Random Lasers

J. Sartor, F. Eilers, C. Klingshirn, H. Kalt
Journal: AIP Conference Proceedings
AIP Conf. Proc. 1399, 449–450 (2011)
https://doi.org/10.1063/1.3666447
Published: December 2011
View article titled, Properties of Modes in ZnO Random Lasers
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Journal Articles

Thermal annealing of InAs quantum dots on patterned GaAs substrates

M. Helfrich, J. Hendrickson, D. Rülke, H. Kalt, M. Hetterich, G. Khitrova, H. Gibbs, S. Linden, M. Wegener, D. Z. Hu, D. M. Schaadt
Journal: AIP Conference Proceedings
AIP Conf. Proc. 1399, 217–218 (2011)
https://doi.org/10.1063/1.3666332
Published: December 2011
View article titled, Thermal annealing of InAs quantum dots on patterned GaAs substrates
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Journal Articles

Anomalous optical processes in photoluminescence from ultrasmall quantum dots of ZnO

L. M. Kukreja, P. Misra, A. K. Das, J. Sartor, H. Kalt
Journal: Journal of Vacuum Science & Technology A
J. Vac. Sci. Technol. A 29, 03A120 (2011)
https://doi.org/10.1116/1.3578344
Published: April 2011
View article titled, Anomalous optical processes in photoluminescence from ultrasmall quantum dots of ZnO
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Journal Articles

Enhancement of the near-band-edge photoluminescence of ZnO nanowires: Important role of hydrogen incorporation versus plasmon resonances

A. Dev, J. P. Richters, J. Sartor, H. Kalt, J. Gutowski, T. Voss
Journal: Applied Physics Letters
Appl. Phys. Lett. 98, 131111 (2011)
https://doi.org/10.1063/1.3569951
Published: March 2011
View article titled, Enhancement of the near-band-edge photoluminescence of ZnO nanowires: Important role of hydrogen incorporation versus plasmon resonances
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Journal Articles

Doping and optimal electron spin polarization in n-ZnMnSe for quantum-dot spin-injection light-emitting diodes

W. Löffler, N. Höpcke, H. Kalt, S. F. Li, M. Grün, M. Hetterich
Journal: Applied Physics Letters
Appl. Phys. Lett. 96, 052113 (2010)
https://doi.org/10.1063/1.3308500
Published: February 2010
View article titled, Doping and optimal electron spin polarization in n-ZnMnSe for quantum-dot spin-injection light-emitting diodes
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Journal Articles

Pulsed Electrical Spin Injection into InGaAs Quantum Dots: Studies of the Electroluminescence Polarization Dynamics

P. Asshoff, W. Löffler, H. Flügge, J. Zimmer, J. Müller, B. Westenfelder, D. Z. Hu, D. M. Schaadt, H. Kalt, M. Hetterich
Journal: AIP Conference Proceedings
AIP Conf. Proc. 1199, 383–384 (2010)
https://doi.org/10.1063/1.3295463
Published: January 2010
View article titled, Pulsed Electrical Spin Injection into InGaAs Quantum Dots: Studies of the Electroluminescence Polarization Dynamics
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Journal Articles

GaAs micro‐pyramids serving as optical micro‐cavities

M. Karl, T. Beck, S. Li, D. Z. Hu, D. M. Schaadt, H. Kalt, M. Hetterich
Journal: AIP Conference Proceedings
AIP Conf. Proc. 1199, 369–370 (2010)
https://doi.org/10.1063/1.3295456
Published: January 2010
View article titled, GaAs micro‐pyramids serving as optical micro‐cavities
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Journal Articles

Influence of the measurement procedure on the field-effect dependent conductivity of ZnO nanorods

D. Weissenberger, D. Gerthsen, A. Reiser, G. M. Prinz, M. Feneberg, K. Thonke, H. Zhou, J. Sartor, J. Fallert, C. Klingshirn, H. Kalt
Journal: Applied Physics Letters
Appl. Phys. Lett. 94, 042107 (2009)
https://doi.org/10.1063/1.3075849
Published: January 2009
View article titled, Influence of the measurement procedure on the field-effect dependent conductivity of ZnO nanorods
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Journal Articles

Structural, magnetic, and optical properties of Co- and Gd-implanted ZnO(0001) substrates

V. Ney, S. Ye, T. Kammermeier, A. Ney, H. Zhou, J. Fallert, H. Kalt, F.-Y. Lo, A. Melnikov, A. D. Wieck
Journal: Journal of Applied Physics
J. Appl. Phys. 104, 083904 (2008)
https://doi.org/10.1063/1.3000452
Published: October 2008
View article titled, Structural, magnetic, and optical properties of Co- and Gd-implanted ZnO(0001) substrates
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Journal Articles

Synthesis and optical properties of ZnO and carbon nanotube based coaxial heterostructures

D. S. Kim, S.-M. Lee, R. Scholz, M. Knez, U. Gösele, J. Fallert, H. Kalt, M. Zacharias
Journal: Applied Physics Letters
Appl. Phys. Lett. 93, 103108 (2008)
https://doi.org/10.1063/1.2952487
Published: September 2008
View article titled, Synthesis and optical properties of ZnO and carbon nanotube based coaxial heterostructures
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Journal Articles

Q -factor and density of optical modes in pyramidal and cone-shaped GaAs microcavities

M. Karl, T. Beck, S. Li, H. Kalt, M. Hetterich
Journal: Applied Physics Letters
Appl. Phys. Lett. 92, 231105 (2008)
https://doi.org/10.1063/1.2946659
Published: June 2008
View article titled, Q -factor and density of optical modes in pyramidal and cone-shaped GaAs microcavities
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Journal Articles

Influence of InGaAs cap layers with different In concentration on the properties of InGaAs quantum dots

D. Litvinov, H. Blank, R. Schneider, D. Gerthsen, T. Vallaitis, J. Leuthold, T. Passow, A. Grau, H. Kalt, C. Klingshirn, M. Hetterich
Journal: Journal of Applied Physics
J. Appl. Phys. 103, 083532 (2008)
https://doi.org/10.1063/1.2903143
Published: April 2008
View article titled, Influence of InGaAs cap layers with different In concentration on the properties of InGaAs quantum dots
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Journal Articles

Influence of ZnO seed crystals and annealing on the optical quality of low-temperature grown ZnO nanorods

C. Bekeny, T. Voss, B. Hilker, J. Gutowski, R. Hauschild, H. Kalt, B. Postels, A. Bakin, A. Waag
Journal: Journal of Applied Physics
J. Appl. Phys. 102, 044908 (2007)
https://doi.org/10.1063/1.2773632
Published: August 2007
View article titled, Influence of ZnO seed crystals and annealing on the optical quality of low-temperature grown ZnO nanorods
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Journal Articles

Parallel preparation of highly spin-polarized electrons in single In As ∕ Ga As quantum dots

W. Löffler, M. Hetterich, C. Mauser, S. Li, T. Passow, H. Kalt
Journal: Applied Physics Letters
Appl. Phys. Lett. 90, 232105 (2007)
https://doi.org/10.1063/1.2746405
Published: June 2007
View article titled, Parallel preparation of highly spin-polarized electrons in single In As ∕ Ga As quantum dots
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Journal Articles

Optical modes in pyramidal GaAs microcavities

F. M. Weber, M. Karl, J. Lupaca-Schomber, W. Löffler, S. Li, T. Passow, J. Hawecker, D. Gerthsen, H. Kalt, M. Hetterich
Journal: Applied Physics Letters
Appl. Phys. Lett. 90, 161104 (2007)
https://doi.org/10.1063/1.2723688
Published: April 2007
View article titled, Optical modes in pyramidal GaAs microcavities
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Journal Articles

Temperature Dependence of Exciton Spin Relaxation Rates in Semiconductor Quantum Dots

A. Reznitsky, A. Klochikhin, S. Permogorov, L. Tenishev, K. Mironenko, E. Tsitsishvili, R. v. Baltz, H. Kalt, C. Klingshirn
Journal: AIP Conference Proceedings
AIP Conf. Proc. 893, 1321–1322 (2007)
https://doi.org/10.1063/1.2730389
Published: April 2007
View article titled, Temperature Dependence of Exciton Spin Relaxation Rates in Semiconductor Quantum Dots
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Journal Articles

Processes of Stimulated Emission in ZnO

J. Fallert, R. Hauschild, A. Urban, H. Priller, H. Kalt, C. Klingshirn
Journal: AIP Conference Proceedings
AIP Conf. Proc. 893, 163–164 (2007)
https://doi.org/10.1063/1.2729820
Published: April 2007
View article titled, Processes of Stimulated Emission in ZnO
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Journal Articles

Single and Coupled Microcavities — AlAs/GaAs DBR Pillars and GaAs Pyramids

M. Karl, W. Löffler, J. Lupaca‐Schomber, T. Passow, S. Li, J. Hawecker, F. Pérez‐Willard, D. Gerthsen, H. Kalt, C. Klingshirn, M. Hetterich
Journal: AIP Conference Proceedings
AIP Conf. Proc. 893, 1133–1134 (2007)
https://doi.org/10.1063/1.2730296
Published: April 2007
View article titled, Single and Coupled Microcavities — AlAs/GaAs DBR Pillars and GaAs Pyramids
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