Prof. Dr. Holger T. Grahn

Determination of the interface grading parameter for terahertz quantum-cascade laser structures based on transmission electron microscopy

@article{ author = { X. Lü and E. Luna and L. Schrottke and K. Biermann and H. T. Grahn }, title = { Determination of the interface grading parameter for terahertz quantum-cascade laser structures based on transmission electron microscopy }, journal = { Applied Physics Letters }, volume = { 113 }, year = { 2018 }, pages = { 172101 } }

TY - JOUR AU - X. Lü AU - E. Luna AU - L. Schrottke AU - K. Biermann AU - H. T. Grahn TI - Determination of the interface grading parameter for terahertz quantum-cascade laser structures based on transmission electron microscopy JF - Applied Physics Letters JA - Appl. Phys. Lett. J1 - APL VL - 113 SP - 172101 PY - 2018/10/22

Fast Detection of a Weak Signal by a Stochastic Resonance Induced by a Coherence Resonance in an Excitable GaAs/Al_{0.45}Ga_{0.55}As Superlattice

@article{ author = { Z. Z. Shao and Z. Z. Yin and H. Song and W. Liu and X. J. Li and J. Zhu and K. Biermann and L. L. Bonilla and H. T. Grahn and Y. H. Zhang }, title = { Fast Detection of a Weak Signal by a Stochastic Resonance Induced by a Coherence Resonance in an Excitable GaAs/Al_{0.45}Ga_{0.55}As Superlattice }, journal = { Physical Review Letters }, volume = { 121 }, year = { 2018 }, pages = { 086806 } }

TY - JOUR AU - Z. Z. Shao AU - Z. Z. Yin AU - H. Song AU - W. Liu AU - X. J. Li AU - J. Zhu AU - K. Biermann AU - L. L. Bonilla AU - H. T. Grahn AU - Y. H. Zhang TI - Fast Detection of a Weak Signal by a Stochastic Resonance Induced by a Coherence Resonance in an Excitable GaAs/Al_{0.45}Ga_{0.55}As Superlattice JF - Physical Review Letters JA - Phys. Rev. Lett. J1 - PRL VL - 121 SP - 086806 PY - 2018/08/24

Coherence Resonance and Stochastic Resonance in an Excitable Semiconductor Superlattice

@article{ author = { E. Mompo and M. Ruiz-Garcia and M. Carretero and H. T. Grahn and Y. H. Zhang and L. L. Bonilla }, title = { Coherence Resonance and Stochastic Resonance in an Excitable Semiconductor Superlattice }, journal = { Physical Review Letters }, volume = { 121 }, year = { 2018 }, pages = { 086805 } }

TY - JOUR AU - E. Mompo AU - M. Ruiz-Garcia AU - M. Carretero AU - H. T. Grahn AU - Y. H. Zhang AU - L. L. Bonilla TI - Coherence Resonance and Stochastic Resonance in an Excitable Semiconductor Superlattice JF - Physical Review Letters JA - Phys. Rev. Lett. J1 - PRL VL - 121 SP - 086805 PY - 2018/08/24

Chaotic current self-oscillations in doped, weakly coupled semiconductor superlattices for true random number generation

@article{ author = { Y. H. Zhang and Y. Aviad and H. T. Grahn }, title = { Chaotic current self-oscillations in doped, weakly coupled semiconductor superlattices for true random number generation }, journal = { Coupled Mathematical Models for Physical and Nanoscale Systems and their Applications; edited by L. L. Bonilla, E. Kaxiras, and R. Melnik }, volume = { 232 }, year = { 2018 }, pages = { 35 } }

TY - JOUR AU - Y. H. Zhang AU - Y. Aviad AU - H. T. Grahn TI - Chaotic current self-oscillations in doped, weakly coupled semiconductor superlattices for true random number generation JF - Coupled Mathematical Models for Physical and Nanoscale Systems and their Applications; edited by L. L. Bonilla, E. Kaxiras, and R. Melnik JA - J1 - VL - 232 SP - 35 PY - 2018/07/01

Intrinsic frequency tuning of terahertz quantum-cascade lasers

@article{ author = { L. Schrottke and X. Lü and B. Röben and K. Biermann and M. Wienold and H. Richter and H.-W. Hübers and H. T. Grahn }, title = { Intrinsic frequency tuning of terahertz quantum-cascade lasers }, journal = { Journal of Applied Physics }, volume = { 123 }, year = { 2018 }, pages = { 213102 } }

TY - JOUR AU - L. Schrottke AU - X. Lü AU - B. Röben AU - K. Biermann AU - M. Wienold AU - H. Richter AU - H.-W. Hübers AU - H. T. Grahn TI - Intrinsic frequency tuning of terahertz quantum-cascade lasers JF - Journal of Applied Physics JA - J. Appl. Phys. J1 - JAP VL - 123 SP - 213102 PY - 2018/05/31

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

@article{ author = { J.E. Boschker and X. Lü and V. Bragaglia and R. Wang and H. T. Grahn and R. Calarco }, title = { Electrical and optical properties of epitaxial binary and ternary GeTe-Sb2Te3 alloys }, journal = { Scientific Reports }, volume = { 8 }, year = { 2018 }, pages = { 5889 } }

TY - JOUR AU - J.E. Boschker AU - X. Lü AU - V. Bragaglia AU - R. Wang AU - H. T. Grahn AU - R. Calarco TI - Electrical and optical properties of epitaxial binary and ternary GeTe-Sb2Te3 alloys JF - Scientific Reports JA - Sci. Rep. J1 - SREP VL - 8 SP - 5889 PY - 2018/04/12

Doppler-free spectroscopy with a terahertz quantum-cascade laser

@article{ author = { M. Wienold and T. Alam and L. Schrottke and H. T. Grahn and H.-W. Hübers }, title = { Doppler-free spectroscopy with a terahertz quantum-cascade laser }, journal = { Optics Express }, volume = { 26 }, year = { 2018 }, pages = { 6692 } }

TY - JOUR AU - M. Wienold AU - T. Alam AU - L. Schrottke AU - H. T. Grahn AU - H.-W. Hübers TI - Doppler-free spectroscopy with a terahertz quantum-cascade laser JF - Optics Express JA - Opt. Express J1 - VL - 26 SP - 6692 PY - 2018/03/05

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

@article{ author = { P. Corfdir and H. Li and O. Marquardt and G. Gao and M. R. Molas and J. K. Zettler and D. van Treeck and T. Flissikowski and M. Potemski and C. Draxl and A. Trampert and S. Fernández-Garrido and H. T. Grahn and O. Brandt }, title = { Crystal-phase quantum wires: One-dimensional heterostructures with atomically flat interfaces }, journal = { Nano Letters }, volume = { 18 }, year = { 2018 }, pages = { 247 } }

TY - JOUR AU - P. Corfdir AU - H. Li AU - O. Marquardt AU - G. Gao AU - M. R. Molas AU - J. K. Zettler AU - D. van Treeck AU - T. Flissikowski AU - M. Potemski AU - C. Draxl AU - A. Trampert AU - S. Fernández-Garrido AU - H. T. Grahn AU - O. Brandt TI - Crystal-phase quantum wires: One-dimensional heterostructures with atomically flat interfaces JF - Nano Letters JA - Nano Lett. J1 - VL - 18 SP - 247 PY - 2018/01/10

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

@article{ author = { T. Hagelschuer and M. Wienold and H. Richter and L. Schrottke and H. T. Grahn and H.-W. Hübers }, title = { Real-time gas sensing based on optical feedback in a terahertz quantum-cascade laser }, journal = { Optics Express }, volume = { 25 }, year = { 2017 }, pages = { 30203 } }

TY - JOUR AU - T. Hagelschuer AU - M. Wienold AU - H. Richter AU - L. Schrottke AU - H. T. Grahn AU - H.-W. Hübers TI - Real-time gas sensing based on optical feedback in a terahertz quantum-cascade laser JF - Optics Express JA - Opt. Express J1 - VL - 25 SP - 30203 PY - 2017/11/17

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

@article{ author = { F. Feix and T. Flissikowski and K. K. Sabelfeld and V. M. Kaganer and M. Wölz and L. Geelhaar and H. T. Grahn and 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 }, journal = { Physical Review Applied }, volume = { 8 }, year = { 2017 }, pages = { 014032 } }

TY - JOUR AU - F. Feix AU - T. Flissikowski AU - K. K. Sabelfeld AU - V. M. Kaganer AU - M. Wölz AU - L. Geelhaar AU - H. T. Grahn AU - O. Brandt TI - 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 JF - Physical Review Applied JA - Phys. Rev. Appl. J1 - VL - 8 SP - 014032 PY - 2017/07/27