@magazinearticle {Gmachl:02,
	title = {Laser Optics: Ultrabroadband QuantumCascade Lasers},
	journal = {Opt. Photon. News},
	volume = {13},
	number = {12},
	year = {2002},
	month = {Dec},
	pages = {23{\textendash}23},
	publisher = {OSA},
	keywords = {Laser systems, Lasers, Multiple quantum wells, Quantum cascade semiconductor lasers, Waveguide cores},
	doi = {10.1364/OPN.13.12.000023},
	url = {http://www.osa-opn.org/abstract.cfm?URI=opn-13-12-23},
	author = {Gmachl, Claire and Sivco, Deborah L. and Alex Soibel and Colombelli, Raffaele and Federico Capasso and Cho, Alfred Y.}
}
