Magnetic field effects in terahertz quantum-cascade lasers
86283 Tamosiunas_Semi_Sci_Tech_19_348_2004.pdf (85.25Kb)
Access StatusFull text of the requested work is not available in DASH at this time ("restricted access"). For more information on restricted deposits, see our FAQ.
MetadataShow full item record
CitationTamosiunas, V, R Zobl, G Fasching, J Ulrich, G Strasser, K Unterrainer, R Colombelli, et al. 2004. “Magnetic Field Effects in Terahertz Quantum-Cascade Lasers.” Semiconductor Science and Technology 19 (4): S348–50. https://doi.org/10.1088/0268-1242/19/4/115.
AbstractWe have measured the emission intensity and spectra of terahertz quantum-cascade lasers in an external magnetic field applied normal to the epilayers. We have observed a reduction of the threshold current, an enhancement of laser emission intensity and shifts of the emission line. A wider operating range was predicted for the selected waveguide design according to our finite-difference time-domain simulation results. The intensity enhancement and the threshold current reduction are attributed to the suppression of nonradiative Auger-intersubband transitions by Landau quantization of the in-plane electron motion, to the modulation of the injection rate via resonant inter-Landau-level transfer, and to the modulation of waveguide properties.
Citable link to this pagehttp://nrs.harvard.edu/urn-3:HUL.InstRepos:41371395
- FAS Scholarly Articles