@article { ISI:000220860700116,
	title = {Magnetic field effects in terahertz quantum-cascade lasers},
	journal = {SEMICONDUCTOR SCIENCE AND TECHNOLOGY},
	volume = {19},
	number = {4, SI},
	year = {2004},
	note = {13th International Conference on Nonequilibrium Carrier Dynamics in Semiconductors (HCIS-13), Modena, ITALY, JUL 21-AUG 01, 2003},
	month = {APR},
	pages = {S348-S350},
	publisher = {IOP PUBLISHING LTD},
	type = {Article; Proceedings Paper},
	address = {TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND},
	abstract = {We 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.},
	issn = {0268-1242},
	doi = {10.1088/0268-1242/19/4/115},
	author = {Tamosiunas, V and Zobl, R and Fasching, G and Ulrich, J and Strasser, G and Unterrainer, K and Colombelli, R and Gmachl, C. and West, K and Pfeiffer, L and F. Capasso}
}
