Prof. Dr. Holger T. Grahn

Head of Department Semiconductor Spectroscopy

Holger T. Grahn

Telefon: +49 30 20377 318

Tel. mobil: 602

Raum: 0517

Email: htgrahn@pdi-berlin.de

 

Abteilung: Semiconductor Spectroscopy

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

 

 

61 Autor Y. Y. Huang , H. Qin , W. Li , S. L. Lu , J. R. Dong , H. T. Grahn , Y. H. Zhang
Titel

Experimental evidence for coherence resonance in a noise-driven GaAs/AlAs superlattice

Source Europhys. Lett. , 105 , 47005 ( 2014 )
DOI : 10.1209/0295-5075/105/47005 | 2538 Cite : Bibtex RIS
Y. Y. Huang, H. Qin, W. Li, S. L. Lu, J. R. Dong, H. T. Grahn, and Y. H. Zhang

62 Autor M. Wienold , B. Röben , L. Schrottke , R. Sharma , A. Tahraoui , K. Biermann , H. T. Grahn
Titel

High-temperature, continuous-wave operation of terahertz quantum-cascade lasers with metal-metal waveguides and third-order distributed feedback

Source Opt. Express , 22 , 3334 ( 2014 )
DOI : 10.1364/OE.22.003334 | Download: PDF | 2503 Cite : Bibtex RIS
M. Wienold, B. Röben, L. Schrottke, R. Sharma, A. Tahraoui, K. Biermann, and H. T. Grahn

63 Autor R. Eichholz , H. Richter , M. Wienold , L. Schrottke , R. Hey , H. T. Grahn , H.-W. Hübers
Titel

Frequency modulation spectroscopy with a THz quantum-cascade laser

Source Opt. Express , 21 , 32199 ( 2013 )
DOI : 10.1364/OE.21.032199 | Download: PDF | 2504 Cite : Bibtex RIS
R. Eichholz, H. Richter, M. Wienold, L. Schrottke, R. Hey, H. T. Grahn, and H.-W. Hübers

64 Autor B. Wilsch , U. Jahn , B. Jenichen , J. Lähnemann , H.T. Grahn , H. Wang , H. Yang
Titel

Spatially resolved investigation of strain and composition variations in (In,Ga)N/GaN epilayers

Source Appl. Phys. Lett. , 102 , 052109 ( 2013 )
DOI : 10.1063/1.4790591 | Download: PDF | 2380 Cite : Bibtex RIS
B. Wilsch, U. Jahn, B. Jenichen, J. Lähnemann, H.T. Grahn, H. Wang, and H. Yang

65 Autor L. Schrottke , M. Wienold , R. Sharma , X. Lü , K. Biermann , R. Hey , A. Tahraoui , H. Richter , H.-W. Hübers , H.T. Grahn
Titel

Quantum-cascade lasers as local oscillators for heterodyne spectrometers in the spectral range around 4.745 THz

Source Semicond. Sci. Technol. , 28 , 035011 ( 2013 )
2335 Cite : Bibtex RIS
L. Schrottke, M. Wienold, R. Sharma, X. Lü, K. Biermann, R. Hey, A. Tahraoui, H. Richter, H.-W. Hübers, and H.T. Grahn

66 Autor F. Gericke , T. Flissikowski , F. Katmis , W. Braun , H.T. Grahn
Titel

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

Source J. Appl. Phys. , 113 , 183507 ( 2013 )
Download: PDF | 2397 Cite : Bibtex RIS
F. Gericke, T. Flissikowski, F. Katmis, W. Braun, and H.T. Grahn

67 Autor X. Lü , M. Wienold , L. Schrottke , K. Biermann , H.T. Grahn
Titel

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

Source J. Appl. Phys. , 113 , 033103 ( 2013 )
Download: PDF | 2378 Cite : Bibtex RIS
X. Lü, M. Wienold, L. Schrottke, K. Biermann, and H.T. Grahn

68 Autor R. Sharma , L. Schrottke , M. Wienold , K. Biermann , A. Tahraoui , H.T. Grahn
Titel

Influence of post-growth rapid thermal annealing on the transport and lasing characteristics of terahertz quantum-cascade lasers

Source J. Phys. D: Appl. Phys. , 46 , 305107 ( 2013 )
2379 Cite : Bibtex RIS
R. Sharma, L. Schrottke, M. Wienold, K. Biermann, A. Tahraoui, and H.T. Grahn

69 Autor Y. J. Cho , X. Lue , M. Wienold , M. Ramsteiner , H.T. Grahn , O. Brandt
Titel

Auger recombination as the dominant nonradiative recombination channel in InN

Source Phys. Rev. B , 87 , 155203 ( 2013 )
Download: PDF | 2381 Cite : Bibtex RIS
Y. J. Cho, X. Lue, M. Wienold, M. Ramsteiner, H.T. Grahn, and O. Brandt

70 Autor O. Brandt , P. Misra , T. Flissikowski , H.T. Grahn
Titel

Excitation polarization anisotropy of the spontaneous emission from an M-plane GaN film: Competition between hole relaxation and exciton recombination

Source Phys. Rev. B , 87 , 165308 ( 2013 )
Download: PDF | 2382 Cite : Bibtex RIS
O. Brandt, P. Misra, T. Flissikowski, and H.T. Grahn