Intersubband Emitters

Terahertz GaAs/AlAs quantum-cascade lasers

@article{ author = { L. Schrottke and X. Lü and G. Rozas and K. Biermann and H. T. Grahn }, title = { Terahertz GaAs/AlAs quantum-cascade lasers }, journal = { Applied Physics Letters }, volume = { 108 }, year = { 2016 }, pages = { 102102 } }

TY - JOUR AU - L. Schrottke AU - X. Lü AU - G. Rozas AU - K. Biermann AU - H. T. Grahn TI - Terahertz GaAs/AlAs quantum-cascade lasers JF - Applied Physics Letters JA - Appl. Phys. Lett. J1 - APL VL - 108 SP - 102102 PY - 2016/03/08

Fast continuous tuning of terahertz quantum-cascade lasers by rear facet illumination

@article{ author = { M. Hempel and B. Röben and L. Schrottke and H.-W. Hübers and H. T. Grahn }, title = { Fast continuous tuning of terahertz quantum-cascade lasers by rear facet illumination }, journal = { Applied Physics Letters }, volume = { 108 }, year = { 2016 }, pages = { 191106 } }

TY - JOUR AU - M. Hempel AU - B. Röben AU - L. Schrottke AU - H.-W. Hübers AU - H. T. Grahn TI - Fast continuous tuning of terahertz quantum-cascade lasers by rear facet illumination JF - Applied Physics Letters JA - Appl. Phys. Lett. J1 - APL VL - 108 SP - 191106 PY - 2016/05/10

Frequency dependence of the maximum operating temperature for quantum-cascade lasers up to 5.4 THz

@article{ author = { M. Wienold and B. Röben and X. Lü and G. Rozas and L. Schrottke and K. Biermann and H. T. Grahn }, title = { Frequency dependence of the maximum operating temperature for quantum-cascade lasers up to 5.4 THz }, journal = { Applied Physics Letters }, volume = { 107 }, year = { 2015 }, pages = { 202101 } }

TY - JOUR AU - M. Wienold AU - B. Röben AU - X. Lü AU - G. Rozas AU - L. Schrottke AU - K. Biermann AU - H. T. Grahn TI - Frequency dependence of the maximum operating temperature for quantum-cascade lasers up to 5.4 THz JF - Applied Physics Letters JA - Appl. Phys. Lett. J1 - APL VL - 107 SP - 202101 PY - 2015/11/16

Fourier transform-based scattering-rate method for self-consistent simulations of carrier transport in semiconductor heterostructures

@article{ author = { L. Schrottke and X. Lü and H. T. Grahn }, title = { Fourier transform-based scattering-rate method for self-consistent simulations of carrier transport in semiconductor heterostructures }, journal = { Journal of Applied Physics }, volume = { 117 }, year = { 2015 }, pages = { 154309 } }

TY - JOUR AU - L. Schrottke AU - X. Lü AU - H. T. Grahn TI - Fourier transform-based scattering-rate method for self-consistent simulations of carrier transport in semiconductor heterostructures JF - Journal of Applied Physics JA - J. Appl. Phys. J1 - JAP VL - 117 SP - 154309 PY - 2015/04/21

Efficient simulation of the impact of interface grading on the optical and transport properties of semiconductor heterostructures

@article{ author = { X. Lü and L. Schrottke and E. Luna and H. T. Grahn }, title = { Efficient simulation of the impact of interface grading on the optical and transport properties of semiconductor heterostructures }, journal = { Applied Physics Letters }, volume = { 104 }, year = { 2014 }, pages = { 232106 } }

TY - JOUR AU - X. Lü AU - L. Schrottke AU - E. Luna AU - H. T. Grahn TI - Efficient simulation of the impact of interface grading on the optical and transport properties of semiconductor heterostructures JF - Applied Physics Letters JA - Appl. Phys. Lett. J1 - APL VL - 104 SP - 232106 PY - 2014/06/10

High-temperature, continuous-wave operation of terahertz quantum-cascade lasers with metal-metal waveguides and third-order distributed feedback

@article{ author = { M. Wienold and B. Röben and L. Schrottke and R. Sharma and A. Tahraoui and K. Biermann and H. T. Grahn }, title = { High-temperature, continuous-wave operation of terahertz quantum-cascade lasers with metal-metal waveguides and third-order distributed feedback }, journal = { Optics Express }, volume = { 22 }, year = { 2014 }, pages = { 3334 } }

TY - JOUR AU - M. Wienold AU - B. Röben AU - L. Schrottke AU - R. Sharma AU - A. Tahraoui AU - K. Biermann AU - H. T. Grahn TI - High-temperature, continuous-wave operation of terahertz quantum-cascade lasers with metal-metal waveguides and third-order distributed feedback JF - Optics Express JA - Opt. Express J1 - VL - 22 SP - 3334 PY - 2014/02/05

Mid-infrared-pumped, electrically driven terahertz quantum laser: enhanced pumping efficiency and prevention of electric-field domains

@article{ author = { X. Lü and M. Wienold and L. Schrottke and K. Biermann and H.T. Grahn }, title = { Mid-infrared-pumped, electrically driven terahertz quantum laser: enhanced pumping efficiency and prevention of electric-field domains }, journal = { Journal of Applied Physics }, volume = { 113 }, year = { 2013 }, pages = { 033103 } }

TY - JOUR AU - X. Lü AU - M. Wienold AU - L. Schrottke AU - K. Biermann AU - H.T. Grahn TI - Mid-infrared-pumped, electrically driven terahertz quantum laser: enhanced pumping efficiency and prevention of electric-field domains JF - Journal of Applied Physics JA - J. Appl. Phys. J1 - JAP VL - 113 SP - 033103 PY - 2013/01/01

Quantum-cascade lasers as local oscillators for heterodyne spectrometers in the spectral range around 4.745 THz

@article{ author = { L. Schrottke and M. Wienold and R. Sharma and X. Lü and K. Biermann and R. Hey and A. Tahraoui and H. Richter and H.-W. Hübers and H.T. Grahn }, title = { Quantum-cascade lasers as local oscillators for heterodyne spectrometers in the spectral range around 4.745 THz }, journal = { Semiconductor Science and Technology }, volume = { 28 }, year = { 2013 }, pages = { 035011 } }

TY - JOUR AU - L. Schrottke AU - M. Wienold AU - R. Sharma AU - X. Lü AU - K. Biermann AU - R. Hey AU - A. Tahraoui AU - H. Richter AU - H.-W. Hübers AU - H.T. Grahn TI - Quantum-cascade lasers as local oscillators for heterodyne spectrometers in the spectral range around 4.745 THz JF - Semiconductor Science and Technology JA - Semicond. Sci. Technol. J1 - SST VL - 28 SP - 035011 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

Mid-infrared pump-related electric-field domains in GaAs/(Al,Ga)As quantum-cascade structures for terahertz lasing without population inversion

@article{ author = { M. Giehler and M. Wienold and L. Schrottke and R. Hey and H.T. Grahn and S. G. Pavlov and H.-W. Hübers and S. Winnerl and H. Schneider }, title = { Mid-infrared pump-related electric-field domains in GaAs/(Al,Ga)As quantum-cascade structures for terahertz lasing without population inversion }, journal = { Journal of Applied Physics }, volume = { 110 }, year = { 2011 }, pages = { 103104 } }

TY - JOUR AU - M. Giehler AU - M. Wienold AU - L. Schrottke AU - R. Hey AU - H.T. Grahn AU - S. G. Pavlov AU - H.-W. Hübers AU - S. Winnerl AU - H. Schneider TI - Mid-infrared pump-related electric-field domains in GaAs/(Al,Ga)As quantum-cascade structures for terahertz lasing without population inversion JF - Journal of Applied Physics JA - J. Appl. Phys. J1 - JAP VL - 110 SP - 103104 PY - 2011/01/01

Effect of stimulated emission on the transport characteristics of terahertz quantum-cascade lasers

@article{ author = { R. Sharma and L. Schrottke and M. Wienold and K. Biermann and R. Hey and H.T. Grahn }, title = { Effect of stimulated emission on the transport characteristics of terahertz quantum-cascade lasers }, journal = { Applied Physics Letters }, volume = { 99 }, year = { 2011 }, pages = { 151116 } }

TY - JOUR AU - R. Sharma AU - L. Schrottke AU - M. Wienold AU - K. Biermann AU - R. Hey AU - H.T. Grahn TI - Effect of stimulated emission on the transport characteristics of terahertz quantum-cascade lasers JF - Applied Physics Letters JA - Appl. Phys. Lett. J1 - APL VL - 99 SP - 151116 PY - 2011/01/01