Prof. Dr. Holger T. Grahn

Fast 2D and 3D terahertz imaging with a quantum-cascade laser and a scanning mirror

@article{ author = { N. Rothbart and H. Richter and M. Wienold and L. Schrottke and H.T. Grahn and H.-W. Hübers }, title = { Fast 2D and 3D terahertz imaging with a quantum-cascade laser and a scanning mirror }, journal = { IEEE Transactions on Terahertz Science and Technology }, volume = { 3 }, year = { 2013 }, pages = { 617 } }

TY - JOUR AU - N. Rothbart AU - H. Richter AU - M. Wienold AU - L. Schrottke AU - H.T. Grahn AU - H.-W. Hübers TI - Fast 2D and 3D terahertz imaging with a quantum-cascade laser and a scanning mirror JF - IEEE Transactions on Terahertz Science and Technology JA - IEEE Trans. Terahertz Sci. Technol. J1 - VL - 3 SP - 617 PY - 2013/01/01

Epitaxial-side mounting of terahertz quantum-cascade lasers for improved heat management

@article{ author = { O. Krüger and S. Kreutzmann and D. Prasai and M. Wienold and R. Sharma and W. Pittroff and L. Weixelbaum and W. John and K. Biermann and L. Schrottke and F. Schnieder and G. Erbert and H.T. Grahn and G. Tränkle }, title = { Epitaxial-side mounting of terahertz quantum-cascade lasers for improved heat management }, journal = { IEEE Photonics Technology Letters }, volume = { 25 }, year = { 2013 }, pages = { 1570 } }

TY - JOUR AU - O. Krüger AU - S. Kreutzmann AU - D. Prasai AU - M. Wienold AU - R. Sharma AU - W. Pittroff AU - L. Weixelbaum AU - W. John AU - K. Biermann AU - L. Schrottke AU - F. Schnieder AU - G. Erbert AU - H.T. Grahn AU - G. Tränkle TI - Epitaxial-side mounting of terahertz quantum-cascade lasers for improved heat management JF - IEEE Photonics Technology Letters JA - IEEE Photon. Technol. Lett. J1 - VL - 25 SP - 1570 PY - 2013/01/01

Spontaneous quasi-periodic current self-oscillations in a weakly coupled GaAs/(Al,Ga)As superlattice at room temperature

@article{ author = { Y. Y. Huang and W. Li and W. Q. Ma and H. Qin and H.T. Grahn and Y. H. Zhang }, title = { Spontaneous quasi-periodic current self-oscillations in a weakly coupled GaAs/(Al,Ga)As superlattice at room temperature }, journal = { Applied Physics Letters }, volume = { 102 }, year = { 2013 }, pages = { 242107 } }

TY - JOUR AU - Y. Y. Huang AU - W. Li AU - W. Q. Ma AU - H. Qin AU - H.T. Grahn AU - Y. H. Zhang TI - Spontaneous quasi-periodic current self-oscillations in a weakly coupled GaAs/(Al,Ga)As superlattice at room temperature JF - Applied Physics Letters JA - Appl. Phys. Lett. J1 - APL VL - 102 SP - 242107 PY - 2013/01/01

Spectral and spatial luminescence distribution of m-plane ZnO epitaxial films containing stacking faults: A cathodoluminescence study

@article{ author = { W.-H. Lin and W. Jahn and H.T. Grahn and L. W. Chang, and M. M. C. Chou and J.-J. Wu }, title = { Spectral and spatial luminescence distribution of <em>m</em>-plane ZnO epitaxial films containing stacking faults: A cathodoluminescence study }, journal = { Applied Physics Express }, volume = { 6 }, year = { 2013 }, pages = { 061101 } }

TY - JOUR AU - W.-H. Lin AU - W. Jahn AU - H.T. Grahn AU - L. W. Chang, AU - M. M. C. Chou AU - J.-J. Wu TI - Spectral and spatial luminescence distribution of <em>m</em>-plane ZnO epitaxial films containing stacking faults: A cathodoluminescence study JF - Applied Physics Express JA - Appl. Phys. Express J1 - VL - 6 SP - 061101 PY - 2013/01/01

Coupling of exciton states as the origin of their biexponential decay dynamics in GaN nanowires

@article{ author = { C. Hauswald and T. Flissikowski and T. Gotschke and R. Calarco and L. Geelhaar and H.T. Grahn and O. Brandt }, title = { Coupling of exciton states as the origin of their biexponential decay dynamics in GaN nanowires }, journal = { Physical Review B: Solid State }, volume = { 88 }, year = { 2013 }, pages = { 075312 } }

TY - JOUR AU - C. Hauswald AU - T. Flissikowski AU - T. Gotschke AU - R. Calarco AU - L. Geelhaar AU - H.T. Grahn AU - O. Brandt TI - Coupling of exciton states as the origin of their biexponential decay dynamics in GaN nanowires JF - Physical Review B: Solid State JA - Phys. Rev. B J1 - VL - 88 SP - 075312 PY - 2013/01/01

Lateral distributed-feedback gratings for single-mode, high-power terahertz quantum-cascade lasers

@article{ author = { M. Wienold and A. Tahraoui and L. Schrottke and R. Sharma and X. Lü and K. Biermann and R. Hey and H.T. Grahn }, title = { Lateral distributed-feedback gratings for single-mode, high-power terahertz quantum-cascade lasers }, journal = { Optics Express }, volume = { 20 }, year = { 2012 }, pages = { 11207 } }

TY - JOUR AU - M. Wienold AU - A. Tahraoui AU - L. Schrottke AU - R. Sharma AU - X. Lü AU - K. Biermann AU - R. Hey AU - H.T. Grahn TI - Lateral distributed-feedback gratings for single-mode, high-power terahertz quantum-cascade lasers JF - Optics Express JA - Opt. Express J1 - VL - 20 SP - 11207 PY - 2012/01/01

Noise-induced current switching in semiconductor superlattices: Observation of non-exponential kinetics in a high-dimensional system

@article{ author = { Yu. Bomze and R. Hey and H.T. Grahn and S. W. Teitsworth }, title = { Noise-induced current switching in semiconductor superlattices: Observation of non-exponential kinetics in a high-dimensional system }, journal = { Physical Review Letters }, volume = { 109 }, year = { 2012 }, pages = { 026801 } }

TY - JOUR AU - Yu. Bomze AU - R. Hey AU - H.T. Grahn AU - S. W. Teitsworth TI - Noise-induced current switching in semiconductor superlattices: Observation of non-exponential kinetics in a high-dimensional system JF - Physical Review Letters JA - Phys. Rev. Lett. J1 - PRL VL - 109 SP - 026801 PY - 2012/01/01

Optical switching and related structural properties of epitaxial Ge₂Sb₂Te₅ films

@article{ author = { F. Gericke and T. Flissikowski and J. Lähnemann and F. Katmis and W. Braun and H. Riechert and H.T. Grahn }, title = { Optical switching and related structural properties of epitaxial Ge₂Sb₂Te₅ films }, journal = { Journal of Applied Physics }, volume = { 111 }, year = { 2012 }, pages = { 113524 } }

TY - JOUR AU - F. Gericke AU - T. Flissikowski AU - J. Lähnemann AU - F. Katmis AU - W. Braun AU - H. Riechert AU - H.T. Grahn TI - Optical switching and related structural properties of epitaxial Ge₂Sb₂Te₅ films JF - Journal of Applied Physics JA - J. Appl. Phys. J1 - JAP VL - 111 SP - 113524 PY - 2012/01/01

Time-resolved photoluminescence spectroscopy of individual GaN nanowires

@article{ author = { A. Gorgis and T. Flissikowski and O. Brandt and C. Chèze and L. Geelhaar and H. Riechert and H.T. Grahn }, title = { Time-resolved photoluminescence spectroscopy of individual GaN nanowires }, journal = { Physical Review B: Solid State }, volume = { 86 }, year = { 2012 }, pages = { 041302(R) } }

TY - JOUR AU - A. Gorgis AU - T. Flissikowski AU - O. Brandt AU - C. Chèze AU - L. Geelhaar AU - H. Riechert AU - H.T. Grahn TI - Time-resolved photoluminescence spectroscopy of individual GaN nanowires JF - Physical Review B: Solid State JA - Phys. Rev. B J1 - VL - 86 SP - 041302(R) PY - 2012/01/01

Terahertz wavefront measurement with a Hartmann sensor

@article{ author = { H. Richter and M. Greiner-Bär and N. Deßmann and J. Pfund and M. Wienold and L. Schrottke and R. Hey and H.T. Grahn and H.-W. Hübers }, title = { Terahertz wavefront measurement with a Hartmann sensor }, journal = { Applied Physics Letters }, volume = { 101 }, year = { 2012 }, pages = { 031103 } }

TY - JOUR AU - H. Richter AU - M. Greiner-Bär AU - N. Deßmann AU - J. Pfund AU - M. Wienold AU - L. Schrottke AU - R. Hey AU - H.T. Grahn AU - H.-W. Hübers TI - Terahertz wavefront measurement with a Hartmann sensor JF - Applied Physics Letters JA - Appl. Phys. Lett. J1 - APL VL - 101 SP - 031103 PY - 2012/01/01