Prof. Dr. Holger T. Grahn

Frequency and power stabilization of a terahertz quantum-cascade laser using near-infrared optical excitation

@article{ author = { T. Alam and M. Wienold and X. Lü and K. Biermann and L. Schrottke and H. T. Grahn and H.-W. Hübers }, title = { Frequency and power stabilization of a terahertz quantum-cascade laser using near-infrared optical excitation }, journal = { Optics Express }, volume = { 27 }, year = { 2019 }, pages = { 36846 } }

TY - JOUR AU - T. Alam AU - M. Wienold AU - X. Lü AU - K. Biermann AU - L. Schrottke AU - H. T. Grahn AU - H.-W. Hübers TI - Frequency and power stabilization of a terahertz quantum-cascade laser using near-infrared optical excitation JF - Optics Express JA - Opt. Express J1 - VL - 27 SP - 36846 PY - 2019/12/04

A compact 4.75-THz source based on a quantum-cascade laser with a back-facet mirror

@article{ author = { T. Hagelschuer and H. Richter and M. Wienold and X. Lü and B. Röben and L. Schrottke and K. Biermann and H. T. Grahn and H.-W. Hübers }, title = { A compact 4.75-THz source based on a quantum-cascade laser with a back-facet mirror }, journal = { IEEE Transactions on Terahertz Science and Technology }, volume = { 9 }, year = { 2019 }, pages = { 606 } }

TY - JOUR AU - T. Hagelschuer AU - H. Richter AU - M. Wienold AU - X. Lü AU - B. Röben AU - L. Schrottke AU - K. Biermann AU - H. T. Grahn AU - H.-W. Hübers TI - A compact 4.75-THz source based on a quantum-cascade laser with a back-facet mirror JF - IEEE Transactions on Terahertz Science and Technology JA - IEEE Trans. Terahertz Sci. Technol. J1 - VL - 9 SP - 606 PY - 2019/08/14

Absence of quantum-confined Stark effect in GaN quantum disks embedded in (Al,Ga)N nanowires grown by molecular beam epitaxy

@article{ author = { C. Sinito and P. Corfdir and C. Pfüller and G. Gao and J. Bartolomé Vílchez and S. Kölling and A. Rodil Doblado and U. Jahn and J. Lähnemann and T. Auzelle and J. K. Zettler and T. Flissikowski and P. Koenraad and H. T. Grahn and L. Geelhaar and S. Fernández-Garrido and O. Brandt }, title = { Absence of quantum-confined Stark effect in GaN quantum disks embedded in (Al,Ga)N nanowires grown by molecular beam epitaxy }, journal = { Nano Letters }, volume = { 19 }, year = { 2019 }, pages = { 5938 } }

TY - JOUR AU - C. Sinito AU - P. Corfdir AU - C. Pfüller AU - G. Gao AU - J. Bartolomé Vílchez AU - S. Kölling AU - A. Rodil Doblado AU - U. Jahn AU - J. Lähnemann AU - T. Auzelle AU - J. K. Zettler AU - T. Flissikowski AU - P. Koenraad AU - H. T. Grahn AU - L. Geelhaar AU - S. Fernández-Garrido AU - O. Brandt TI - Absence of quantum-confined Stark effect in GaN quantum disks embedded in (Al,Ga)N nanowires grown by molecular beam epitaxy JF - Nano Letters JA - Nano Lett. J1 - VL - 19 SP - 5938 PY - 2019/08/06

Terahertz quantum-cascade lasers for high-resolution spectroscopy of sharp absorption lines

@article{ author = { B. Röben and X. Lü and K. Biermann and L. Schrottke and H. T. Grahn }, title = { Terahertz quantum-cascade lasers for high-resolution spectroscopy of sharp absorption lines }, journal = { Journal of Applied Physics }, volume = { 125 }, year = { 2019 }, pages = { 151613 } }

TY - JOUR AU - B. Röben AU - X. Lü AU - K. Biermann AU - L. Schrottke AU - H. T. Grahn TI - Terahertz quantum-cascade lasers for high-resolution spectroscopy of sharp absorption lines JF - Journal of Applied Physics JA - J. Appl. Phys. J1 - JAP VL - 125 SP - 151613 PY - 2019/04/05

Wideband, high-resolution terahertz spectroscopy by light-induced frequency tuning of quantum-cascade lasers

@article{ author = { T. Alam and M. Wienold and X. Lü and K. Biermann and L. Schrottke and H. T. Grahn and H.-W. Hübers }, title = { Wideband, high-resolution terahertz spectroscopy by light-induced frequency tuning of quantum-cascade lasers }, journal = { Optics Express }, volume = { 27 }, year = { 2019 }, pages = { 5420 } }

TY - JOUR AU - T. Alam AU - M. Wienold AU - X. Lü AU - K. Biermann AU - L. Schrottke AU - H. T. Grahn AU - H.-W. Hübers TI - Wideband, high-resolution terahertz spectroscopy by light-induced frequency tuning of quantum-cascade lasers JF - Optics Express JA - Opt. Express J1 - VL - 27 SP - 5420 PY - 2019/02/13

Impact of outer shell structure and localization effects on charge carrier dynamics in GaAs/(In,Ga)As nanowire core-shell quantum wells

@article{ author = { H. Küpers and P. Corfdir and R. B. Lewis and T. Flissikowski and A. Tahraoui and H. T. Grahn and O. Brandt and L. Geelhaar }, title = { Impact of outer shell structure and localization effects on charge carrier dynamics in GaAs/(In,Ga)As nanowire core-shell quantum wells }, journal = { Physica Status Solidi Rapid Research Letters }, volume = { 13 }, year = { 2019 }, pages = { 1800527 } }

TY - JOUR AU - H. Küpers AU - P. Corfdir AU - R. B. Lewis AU - T. Flissikowski AU - A. Tahraoui AU - H. T. Grahn AU - O. Brandt AU - L. Geelhaar TI - Impact of outer shell structure and localization effects on charge carrier dynamics in GaAs/(In,Ga)As nanowire core-shell quantum wells JF - Physica Status Solidi Rapid Research Letters JA - Phys. Status Solidi RRL J1 - VL - 13 SP - 1800527 PY - 2019/02/07

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