Head of Department Semiconductor Spectroscopy
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 | 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 |
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Source | Semicond. Sci. Technol. , 36 , 035012 ( 2021 ) | |
DOI : 10.1088/1361-6641/abdd4b | Cite : Bibtex RIS |
2 | 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 |
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Source | J. Cryst. Growth , 557 , 125993 ( 2021 ) | |
DOI : 10.1016/j.jcrysgro.2020.125993 | Cite : Bibtex RIS |
3 | 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 |
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Source | Phys. Rev. Mater. , 4 , 104415 ( 2020 ) | |
DOI : 10.1103/PhysRevMaterials.4.104415 | Download arXiv: 2010.04453 | Cite : Bibtex RIS |
4 | Author | B. Röben , X. Lü , K. Biermann , L. Schrottke , H. T. Grahn |
Title |
Effective group dispersion of terahertz quantum-cascade lasers |
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Source | J. Phys. D: Appl. Phys. , 54 , 025110 ( 2020 ) | |
DOI : 10.1088/1361-6463/abbde3 | Cite : Bibtex RIS |
5 | Author | H.-W. Hübers , H. Richter , M. Wienold , X. Lü , L. Schrottke , H. T. Grahn |
Title |
Terahertz spectroscopy using quantum-cascade lasers |
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Source | Photoniques , 101 , 27 ( 2020 ) | |
DOI : 10.1051/photon/202010127 | Cite : Bibtex RIS |
6 | 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 |
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Source | IEEE Trans. Terahertz Sci. Technol. , 10 , 133 ( 2019 ) | |
DOI : 10.1109/TTHZ.2019.2957456 | Cite : Bibtex RIS |
7 | 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 | Cite : Bibtex RIS |
8 | Author | T. Hagelschuer , H. Richter , M. Wienold , X. Lü , B. Röben , L. Schrottke , K. Biermann , H. T. Grahn , H.-W. Hübers |
Title |
A compact 4.75-THz source based on a quantum-cascade laser with a back-facet mirror |
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Source | IEEE Trans. Terahertz Sci. Technol. , 9 , 606 ( 2019 ) | |
DOI : 10.1109/TTHZ.2019.2935337 | Cite : Bibtex RIS |
9 | Author | C. Sinito , P. Corfdir , C. Pfüller , G. Gao , J. Bartolomé , S. Kölling , A. Rodil Doblado , U. Jahn , J. Lähnemann , T. Auzelle , J. K. Zettler , T. Flissikowski , P. Koenraad , H. T. Grahn , L. Geelhaar , S. Fernández-Garrido , O. Brandt |
Title |
Absence of quantum-confined Stark effect in GaN quantum disks embedded in (Al,Ga)N nanowires grown by molecular beam epitaxy |
|
Source | Nano Lett. , 19 , 5938 ( 2019 ) | |
DOI : 10.1021/acs.nanolett.9b01521 | Download arXiv: 1905.04090 | Cite : Bibtex RIS |
10 | Author | B. Röben , X. Lü , K. Biermann , L. Schrottke , H. T. Grahn |
Title |
Terahertz quantum-cascade lasers for high-resolution spectroscopy of sharp absorption lines |
|
Source | J. Appl. Phys. , 125 , 151613 ( 2019 ) | |
DOI : 10.1063/1.5079701 | Download: PDF | Cite : Bibtex RIS |