Title :
Magnetic modulation of THz quantum cascade lasers
Author :
Tamosiunas, V. ; Zobl, R. ; Fasching, G. ; Strasser, G. ; Unterrianer, Karl ; Colombelli, R. ; Gmachl, C. ; Pfiffer, L.N. ; West, K.W. ; Capasso, F.
Author_Institution :
Inst. for Photonics, Tech. Univ. of Vienna, Austria
fDate :
27 Sept.-1 Oct. 2004
Abstract :
We report on the influence of a quantizing magnetic field on a THz quantum cascade laser. The magnetic field splits the subbands into sets of discrete Landau levels, which reduces the phase space for scattering and relaxation. A dramatic enhancement of the laser performance is achieved.
Keywords :
Fourier transform spectra; III-V semiconductors; Landau levels; aluminium compounds; effective mass; gallium arsenide; infrared spectra; magneto-optical modulation; quantum cascade lasers; semiconductor epitaxial layers; semiconductor quantum wells; submillimetre wave lasers; AlGaAs-GaAs; FTIR spectra; GaAs; THz quantum cascade lasers; discrete Landau levels; effective mass; laser performance enhancement; magnetic field splits; magnetic modulation; phase relaxation; phase scattering; quantizing magnetic field; terahertz lasers; Detectors; Gallium arsenide; Magnetic field measurement; Magnetic fields; Magnetic modulators; Magnetic resonance; Optical scattering; Particle scattering; Quantum cascade lasers; Space technology;
Conference_Titel :
Infrared and Millimeter Waves, 2004 and 12th International Conference on Terahertz Electronics, 2004. Conference Digest of the 2004 Joint 29th International Conference on
Print_ISBN :
0-7803-8490-3
DOI :
10.1109/ICIMW.2004.1422203
