Intersubband Emitters: GaAs-based Quantum-Cascade Lasers

Prof. Dr. Holger T. Grahn

Head of Department Semiconductor Spectroscopy

Holger T. Grahn

phone: +49 30 20377 318

phone mobile: 602

room: 0517

email: htgrahn@pdi-berlin.de

 

Department: Semiconductor Spectroscopy

Core research areas: Ferromagnet/ semiconductor hybrid structures , Intersubband emitters , III-V nanowires for optoelectronics

 

 

1 Author Hanno Küpers , Ryan B. Lewis , Pierre Corfdir , Michael Niehle , T. Flissikowski , H. T. Grahn , A. Trampert , O. Brandt , L. Geelhaar
Title

Drastic effect of sequential deposition resulting from flux directionality for the luminescence efficiency of nanowire shells

Source ACS Appl. Mater. Interfaces , 13 , 50220 ( 2021 )
DOI : 10.1021/acsami.1c12371 | Download arXiv: 2106.12309 | 3255 Cite : Bibtex RIS
Hanno Küpers, Ryan B. Lewis, Pierre Corfdir, Michael Niehle, T. Flissikowski, H. T. Grahn, A. Trampert, O. Brandt, and L. Geelhaar

2 Author D. Jayasankar , V. Drakinskiy , N. Rothbart , H. Richter , X. Lü , L. Schrottke , H. T. Grahn , M. Wienold , H.-W. Hübers , P. Sobis , J. Stake
Title

A 3.5-THz, ×6-Harmonic, Single-Ended Schottky Diode Mixer for Frequency Stabilization of Quantum-Cascade Lasers

Source IEEE Trans. Terahertz Sci. Technol. , 11 , 684 ( 2021 )
DOI : 10.1109/TTHZ.2021.3115730 | 3268 Cite : Bibtex RIS
D. Jayasankar, V. Drakinskiy, N. Rothbart, H. Richter, X. Lü, L. Schrottke, H. T. Grahn, M. Wienold, H.-W. Hübers, P. Sobis, and J. Stake

3 Author T. Auzelle , M. Azadmand , T. Flissikowski , M. Ramsteiner , K. Morgenroth , C. Stemmler , S. Fernández-Garrido , S. Sanguinetti , H. T. Grahn , L. Geelhaar , O. Brandt
Title

Enhanced radiative efficiency in GaN nanowires grown on sputtered TiNx

Source ACS Photonics , 8 , 1718 ( 2021 )
DOI : 10.1021/acsphotonics.1c00224 | Download arXiv: 2001.06387 | 3166 Cite : Bibtex RIS
T. Auzelle, M. Azadmand, T. Flissikowski, M. Ramsteiner, K. Morgenroth, C. Stemmler, S. Fernández-Garrido, S. Sanguinetti, H. T. Grahn, L. Geelhaar, and O. Brandt

4 Author X. Lü , B. Röben , L. Schrottke , K. Biermann , H. T. Grahn
Title

Correlation between frequency and location on the wafer for terahertz quantum-cascade lasers

Source Semicond. Sci. Technol. , 36 , 035012 ( 2021 )
DOI : 10.1088/1361-6641/abdd4b | 3231 Cite : Bibtex RIS
X. Lü, B. Röben, L. Schrottke, K. Biermann, and H. T. Grahn

5 Author K. Biermann , Paul L. J. Helgers , A. Crespo-Poveda , A. S. Kuznetsov , A. Tahraoui , B. Röben , X. Lü , L. Schrottke , P. V. Santos , H. T. Grahn
Title

In-situ control of molecular beam epitaxial growth by spectral reflectivity analysis

Source J. Cryst. Growth , 557 , 125993 ( 2021 )
DOI : 10.1016/j.jcrysgro.2020.125993 | 3211 Cite : Bibtex RIS
K. Biermann, Paul L. J. Helgers, A. Crespo-Poveda, A. S. Kuznetsov, A. Tahraoui, B. Röben, X. Lü, L. Schrottke, P. V. Santos, and H. T. Grahn

6 Author D. Czubak , S. Gaucher , L. Oppermann , J. Herfort , K. Zollner , J. Fabian , H. T. Grahn , M. Ramsteiner
Title

Electronic and magnetic properties of alpha-FeGe2 films embedded in vertical spin valve devices

Source Phys. Rev. Mater. , 4 , 104415 ( 2020 )
DOI : 10.1103/PhysRevMaterials.4.104415 | Download arXiv: 2010.04453 | 3196 Cite : Bibtex RIS
D. Czubak, S. Gaucher, L. Oppermann, J. Herfort, K. Zollner, J. Fabian, H. T. Grahn, and M. Ramsteiner

7 Author B. Röben , X. Lü , K. Biermann , L. Schrottke , H. T. Grahn
Title

Effective group dispersion of terahertz quantum-cascade lasers

Source J. Phys. D: Appl. Phys. , 54 , 025110 ( 2020 )
DOI : 10.1088/1361-6463/abbde3 | 3194 Cite : Bibtex RIS
B. Röben, X. Lü, K. Biermann, L. Schrottke, and H. T. Grahn

8 Author H.-W. Hübers , H. Richter , M. Wienold , X. Lü , L. Schrottke , H. T. Grahn
Title

Terahertz spectroscopy using quantum-cascade lasers

Source Photoniques , 101 , 27 ( 2020 )
DOI : 10.1051/photon/202010127 | 3187 Cite : Bibtex RIS
H.-W. Hübers, H. Richter, M. Wienold, X. Lü, L. Schrottke, and H. T. Grahn

9 Author L. Schrottke , X. Lü , B. Röben , K. Biermann , T. Hagelschuer , M. Wienold , H.-W. Hübers , M. Hannemann , J.-P. H. van Helden , J. Röpcke , H. T. Grahn
Title

High-performance GaAs/AlAs terahertz quantum-cascade lasers for spectroscopic applications

Source IEEE Trans. Terahertz Sci. Technol. , 10 , 133 ( 2019 )
DOI : 10.1109/TTHZ.2019.2957456 | 3129 Cite : Bibtex RIS
L. Schrottke, X. Lü, B. Röben, K. Biermann, T. Hagelschuer, M. Wienold, H.-W. Hübers, M. Hannemann, J.-P. H. van Helden, J. Röpcke, and H. T. Grahn

10 Author T. Alam , M. Wienold , X. Lü , K. Biermann , L. Schrottke , H. T. Grahn , H.-W. Hübers
Title

Frequency and power stabilization of a terahertz quantum-cascade laser using near-infrared optical excitation

Source Opt. Express , 27 , 36846 ( 2019 )
DOI : 10.1364/OE.27.036846 | Download: PDF | 3160 Cite : Bibtex RIS
T. Alam, M. Wienold, X. Lü, K. Biermann, L. Schrottke, H. T. Grahn, and H.-W. Hübers

Contact

Prof. Dr. Holger T. Grahn

Head of Department 

+49 30 20377-318

htgrahn@pdi-berlin.de

Dr. Lutz Schrottke

Senior Scientist

+49 30 20377-339

lutz@pdi-berlin.de