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
61 | Author | R. Eichholz , H. Richter , M. Wienold , L. Schrottke , R. Hey , H. T. Grahn , H.-W. Hübers |
Title |
Frequency modulation spectroscopy with a THz quantum-cascade laser |
|
Source | Opt. Express , 21 , 32199 ( 2013 ) | |
DOI : 10.1364/OE.21.032199 | Download: PDF | Cite : Bibtex RIS |
62 | Author | B. Wilsch , U. Jahn , B. Jenichen , J. Lähnemann , H.T. Grahn , H. Wang , H. Yang |
Title |
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 | Cite : Bibtex RIS |
63 | Author | L. Schrottke , M. Wienold , R. Sharma , X. Lü , K. Biermann , R. Hey , A. Tahraoui , H. Richter , H.-W. Hübers , H.T. Grahn |
Title |
Quantum-cascade lasers as local oscillators for heterodyne spectrometers in the spectral range around 4.745 THz |
|
Source | Semicond. Sci. Technol. , 28 , 035011 ( 2013 ) | |
Bibtex RIS | Cite :
64 | Author | F. Gericke , T. Flissikowski , F. Katmis , W. Braun , H.T. Grahn |
Title |
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 ) | |
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65 | Author | X. Lü , M. Wienold , L. Schrottke , K. Biermann , H.T. Grahn |
Title |
Mid-infrared-pumped, electrically driven terahertz quantum laser: enhanced pumping efficiency and prevention of electric-field domains |
|
Source | J. Appl. Phys. , 113 , 033103 ( 2013 ) | |
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66 | Author | R. Sharma , L. Schrottke , M. Wienold , K. Biermann , A. Tahraoui , H.T. Grahn |
Title |
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 ) | |
Bibtex RIS | Cite :
67 | Author | Y. J. Cho , X. Lue , M. Wienold , M. Ramsteiner , H.T. Grahn , O. Brandt |
Title |
Auger recombination as the dominant nonradiative recombination channel in InN |
|
Source | Phys. Rev. B , 87 , 155203 ( 2013 ) | |
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68 | Author | O. Brandt , P. Misra , T. Flissikowski , H.T. Grahn |
Title |
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 ) | |
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69 | Author | N. Rothbart , H. Richter , M. Wienold , L. Schrottke , H.T. Grahn , H.-W. Hübers |
Title |
Fast 2D and 3D terahertz imaging with a quantum-cascade laser and a scanning mirror |
|
Source | IEEE Trans. Terahertz Sci. Technol. , 3 , 617 ( 2013 ) | |
Bibtex RIS | Cite :
70 | Author | O. Krüger , S. Kreutzmann , D. Prasai , M. Wienold , R. Sharma , W. Pittroff , L. Weixelbaum , W. John , K. Biermann , L. Schrottke , F. Schnieder , G. Erbert , H.T. Grahn , G. Tränkle |
Title |
Epitaxial-side mounting of terahertz quantum-cascade lasers for improved heat management |
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Source | IEEE Photon. Technol. Lett. , 25 , 1570 ( 2013 ) | |
Bibtex RIS | Cite :