PDI -> Staff ->

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: Nanoanalytics , III-V nanowires for optoelectronics

 

 

11 Author L. Schrottke , X. Lü , B. Röben , K. Biermann , M. Wienold , H. Richter , H.-W. Hübers , H. T. Grahn
Title

Intrinsic frequency tuning of terahertz quantum-cascade lasers

Source J. Appl. Phys. , 123 , 213102 ( 2018 )
DOI : 10.1063/1.5024480 | Download: PDF | 3015 Cite : Bibtex RIS
L. Schrottke, X. Lü, B. Röben, K. Biermann, M. Wienold, H. Richter, H.-W. Hübers, and H. T. Grahn

12 Author J.E. Boschker , X. Lü , V. Bragaglia , R. Wang , H. T. Grahn , R. Calarco
Title

Electrical and optical properties of epitaxial binary and ternary GeTe-Sb2Te3 alloys

Source Sci. Rep. , 8 , 5889 ( 2018 )
DOI : 10.1038/s41598-018-23221-9 | Download: PDF | 3002 Cite : Bibtex RIS
J.E. Boschker, X. Lü, V. Bragaglia, R. Wang, H. T. Grahn, and R. Calarco

13 Author M. Wienold , T. Alam , L. Schrottke , H. T. Grahn , H.-W. Hübers
Title

Doppler-free spectroscopy with a terahertz quantum-cascade laser

Source Opt. Express , 26 , 6692 ( 2018 )
DOI : 10.1364/OE.26.006692 | Download: PDF | 3023 Cite : Bibtex RIS
M. Wienold, T. Alam, L. Schrottke, H. T. Grahn, and H.-W. Hübers

14 Author P. Corfdir , H. Li , O. Marquardt , G. Gao , M. R. Molas , J. K. Zettler , D. v. Treeck , T. Flissikowski , M. Potemski , C. Draxl , A. Trampert , S. Fernández-Garrido , H. T. Grahn , O. Brandt
Title

Crystal-phase quantum wires: One-dimensional heterostructures with atomically flat interfaces

Source Nano Lett. , 18 , 247 ( 2018 )
DOI : 10.1021/acs.nanolett.7b03997 | 2978 Cite : Bibtex RIS
P. Corfdir, H. Li, O. Marquardt, G. Gao, M. R. Molas, J. K. Zettler, D. v. Treeck, T. Flissikowski, M. Potemski, C. Draxl, A. Trampert, S. Fernández-Garrido, H. T. Grahn, and O. Brandt

15 Author T. Hagelschuer , M. Wienold , H. Richter , L. Schrottke , H. T. Grahn , H.-W. Hübers
Title

Real-time gas sensing based on optical feedback in a terahertz quantum-cascade laser

Source Opt. Express , 25 , 30203 ( 2017 )
DOI : 10.1364/OE.25.030203 | Download: PDF | 2998 Cite : Bibtex RIS
T. Hagelschuer, M. Wienold, H. Richter, L. Schrottke, H. T. Grahn, and H.-W. Hübers

16 Author F. Feix , T. Flissikowski , K. K. Sabelfeld , V. M. Kaganer , M. Wölz , L. Geelhaar , H. T. Grahn , O. Brandt
Title

Ga-Polar (In,Ga)N/GaN Quantum Wells Versus N-Polar (In,Ga)N Quantum Disks in GaN Nanowires: A Comparative Analysis of Carrier Recombination, Diffusion, and Radiative Efficiency

Source Phys. Rev. Applied , 8 , 014032 ( 2017 )
DOI : 10.1103/PhysRevApplied.8.014032 | Download arXiv: 1703.06715 | 2905 Cite : Bibtex RIS
F. Feix, T. Flissikowski, K. K. Sabelfeld, V. M. Kaganer, M. Wölz, L. Geelhaar, H. T. Grahn, and O. Brandt

17 Author A. Guzman , R. San-Roman , R. Gargallo-Caballero , H. T. Grahn
Title

Laterally biased quantum-well infrared photodetectors operating at room temperature with low dark currents

Source IEEE J. Sel. Topics Quantum Electron. , 24 , 1900206 ( 2017 )
DOI : 10.1109/JSTQE.2017.2703307 | 2953 Cite : Bibtex RIS
A. Guzman, R. San-Roman, R. Gargallo-Caballero, and H. T. Grahn

18 Author B. Röben , X. Lü , M. Hempel , K. Biermann , L. Schrottke , H. T. Grahn
Title

Terahertz quantum-cascade lasers as high-power and wideband, gapless sources for spectroscopy

Source Opt. Express , 25 , 16282 ( 2017 )
DOI : 10.1364/OE.25.016282 | Download: PDF | 2916 Cite : Bibtex RIS
B. Röben, X. Lü, M. Hempel, K. Biermann, L. Schrottke, and H. T. Grahn

19 Author M. Hempel , B. Röben , M. Niehle , L. Schrottke , A. Trampert , H. T. Grahn
Title

Continuous tuning of two-section, single-mode terahertz quantum-cascade lasers by fiber-coupled, near-infrared illumination

Source AIP Adv. , 7 , 055201 ( 2017 )
DOI : 10.1063/1.4983030 | Download: PDF | 2902 Cite : Bibtex RIS
M. Hempel, B. Röben, M. Niehle, L. Schrottke, A. Trampert, and H. T. Grahn

20 Author A. Guzman , R. Gargallo-Caballero , X. Lü , H. T. Grahn
Title

Laterally biased structures for room temperature operation of quantumwell infrared photodetectors

Source J. Cryst. Growth , 477 , 272 ( 2017 )
DOI : 10.1016/j.jcrysgro.2017.04.023 | 2993 Cite : Bibtex RIS
A. Guzman, R. Gargallo-Caballero, X. Lü, and H. T. Grahn