as PDF - Physik - Universität Regensburg

as PDF - Physik - Universität Regensburg

Graduiertenkolleg
Nichtlinearität und Nichtgleichgewicht
in kondensierter Materie
Workshop on Quantum Heterostructures
and THz Electronics
University of Regensburg
Thursday, February 05, 2004
Scientific coordinator:
Karl F. Renk
Institut für Angewandte Physik
Universität Regensburg
D – 93040 Regensburg
Workshop on Quantum Heterostructures and THz Electronics
Regensburg, Thursday, 05 February, 2004 (PHY 5.0.21)
Preliminary programme
9.30 – 9.40
Karl Renk: Opening
9.40 – 10.10
Laurence Eaves (University of Nottingham)
Quantisation and chaos of the electron dynamics in superlattices at high
magnetic fields
10.10 – 10.30
Florian Klappenberger (Universität Regensburg)
THz field induced impact-ionization avalanche in GaAs
10.30 – 10.50
Stephan Winnerl (Forschungszentrum Rossendorf)
THz-domain spectroscopy of doped semiconductor superlattices
Coffee
11.20 – 11.50
Frank Renner (Universität Erlangen)
The nipnip-THz-emitter: Photomixing based on quasi-ballistic transport
11.50 – 12.10
P. Kleinert, V. V. Bryksin (Paul-Drude-Institut Berlin)
Amplified space-charge waves in ac-driven semiconductor superlattices
12.10. – 12.30
Dmitry Pavel’ev (Nizhny Novgorod State University)
Highly doped superlattices for submillimeter frequency multipliers and
harmonic mixers
12.30 – 12.50
Andreas Amann (TU Berlin)
Self-stabilization of high frequency oscillations in semiconductor superlattices
by time-delay autosynchronization
Lunch
14.00 – 14.30
Natalia Demarina (Nizhny Novgorod State University)
THz-negative dynamic mobility of miniband electrons in a semiconductor
superlattice
14.30 – 14.50
Alvydas Lisauskas (Universität Frankfurt)
The evolution of the electric field in an optically excited superlattice
14.50 – 15.10
Robert Sachs (Universität Frankfurt)
Mode calculation for THz QCL waveguides
15.10 – 15.30
L. Schrottke, R. Hey, H. T. Grahn (Paul-Drude-Institut Berlin)
Direct observation of laser-level occupation and injector coupling in undoped
GaAs/(Al, Ga)As quantum-cascade structures
Coffee
16.00 – 16.30
Andreas Wacker (TU Berlin)
Theoretical prediction of Gain at 1 THz in Quantum Cascade Lasers
16.30 – 16.50
Christian Pflügl (TU Wien)
Quantum dot intraband Emission
16.50 – 17.20
Heinz-Wilhelm Hübers (DLR Berlin)
Stimulated THz emission from group V impurities in silico
17.20 – 17.50
N.N.
18.22 (11) or 18.32 (11) or 18.40 (6) or 18.52 (11):
Bus departure at the mensa to Albertstraße (public bus number)
19.00
Dinner in the restaurant “Leerer Beutel” (Bertholdstr. 9)