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: Intersubband emitters , Nanoanalytics , III-V nanowires for optoelectronics

 

 

261 Author V. G. Litovchenko , D. V. Korbutyak , S. G. Krylyuk , H.T. Grahn , R. Klann , K. H. Ploog
Title

Identification of electron-hole transitions in short-period GaAs/AlAs superlattices by time-resolved photoluminescence

Source Proc. SPIE Int. Soc. Opt. Eng. , 3359 , 182 ( 1998 )
1022 Cite : Bibtex RIS
V. G. Litovchenko, D. V. Korbutyak, S. G. Krylyuk, H.T. Grahn, R. Klann, and K. H. Ploog

262 Author K. J. Luo , H.T. Grahn , K. H. Ploog
Title

The relocation time of the domain boundary in weakly coupled GaAs/AlAs superlattices

Source Phys. Rev. B , 57 , R6838 ( 1998 )
Download: PDF | 1025 Cite : Bibtex RIS
K. J. Luo, H.T. Grahn, and K. H. Ploog

263 Author K. J. Luo , H.T. Grahn , K. H. Ploog , L. L. Bonilla
Title

Explosive bifurcation to chaos in a weakly coupled semiconductor superlattice

Source Phys. Rev. Lett. , 81 , 1290 ( 1998 )
Download: PDF | 1026 Cite : Bibtex RIS
K. J. Luo, H.T. Grahn, K. H. Ploog, and L. L. Bonilla

264 Author K. J. Luo , H.T. Grahn , S. W. Teitsworth , K. H. Ploog
Title

Influence of higher harmonics on Poincaré maps derived from current self-oscillations in a semiconductor superlattice

Source Phys. Rev. B , 58 , 12613 ( 1998 )
Download: PDF | 1027 Cite : Bibtex RIS
K. J. Luo, H.T. Grahn, S. W. Teitsworth, and K. H. Ploog

265 Author N. Ohtani , N. Egami , K. Fujiwara , H.T. Grahn
Title

Photocurrent self-oscillations in undoped GaAs/AlAs superlattices modulated by an external ac voltage

Source Solid-State Electron. , 42 , 1509 ( 1998 )
1043 Cite : Bibtex RIS
N. Ohtani, N. Egami, K. Fujiwara, and H.T. Grahn

266 Author N. Ohtani , N. Egami , K. Fujiwara , H.T. Grahn , K. H. Ploog
Title

Carrier density dependence of transitions between chaotic and periodic photocurrent oscillations in undoped GaAs/AlAs superlattices

Source Physica B , 249--251 , 878 ( 1998 )
1044 Cite : Bibtex RIS
N. Ohtani, N. Egami, K. Fujiwara, H.T. Grahn, and K. H. Ploog

267 Author N. Ohtani , N. Egami , H.T. Grahn , K. H. Ploog , L. L. Bonilla
Title

The transition between static and dynamic electric-field domain formation in weakly-coupled GaAs/AlAs superlattices

Source Phys. Rev. B , 58 , R7528 ( 1998 )
Download: PDF | 1045 Cite : Bibtex RIS
N. Ohtani, N. Egami, H.T. Grahn, K. H. Ploog, and L. L. Bonilla

268 Author S. Pau , Z. X. Liu , J. Kuhl , J. Ringling , H.T. Grahn , M. A. Khan , C. J. Sun , O. Ambacher , M. Stutzmann
Title

Time-resolved photoluminescence study of excitons in hexagonal GaN layers grown on sapphire

Source Phys. Rev. B , 57 , 7066 ( 1998 )
Download: PDF | 1047 Cite : Bibtex RIS
S. Pau, Z. X. Liu, J. Kuhl, J. Ringling, H.T. Grahn, M. A. Khan, C. J. Sun, O. Ambacher, and M. Stutzmann

269 Author J. Ringling , Y. Kawamura , L. Schrottke , H.T. Grahn , K. Yoshimatsu , A. Kamada , N. Inoue
Title

Direct evidence of the indirect energy gap in InAlAs/AlAsSb multiple quantum wells by time-resolved photoluminescence

Source Appl. Phys. Lett. , 72 , 1620 ( 1998 )
Download: PDF | 1056 Cite : Bibtex RIS
J. Ringling, Y. Kawamura, L. Schrottke, H.T. Grahn, K. Yoshimatsu, A. Kamada, and N. Inoue

270 Author V. F. Sapega , T. Ruf , M. Cardona , H.T. Grahn , K. Ploog
Title

Raman spectroscopy of resonance exciton tunneling in GaAs/AlAs superlattices in electric fields

Source Fiz. Tverd. Tela (St. Petersburg) [Phys. Solid State] , 40 (40) , 827 (761) ( 1998 )
1060 Cite : Bibtex RIS
V. F. Sapega, T. Ruf, M. Cardona, H.T. Grahn, and K. Ploog