@article { ISI:000262357800003,
	title = {High performance quantum cascade lasers based on three-phonon-resonance design},
	journal = {APPLIED PHYSICS LETTERS},
	volume = {94},
	number = {1},
	year = {2009},
	month = {JAN 5},
	publisher = {AMER INST PHYSICS},
	type = {Article},
	address = {CIRCULATION \& FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA},
	abstract = {A quantum cascade laser structure based on three-phonon-resonance design is proposed and demonstrated. Devices, emitting at a wavelength of 9 mu m, processed into buried ridge waveguide structures with a 3 mm long, 16 mu m wide cavity and a high-reflection (HR) coating have shown peak output powers of 1.2 W, slope efficiencies of 1 W/A, threshold current densities of 1.1 kA/cm(2), and high wall-plug efficiency of 6\% at 300 K. A 3 mm long, 12 mu m wide buried-heterostructure device without a HR coating exhibited continuous wave output power of as high as 65 mW from a single facet at 300 K.},
	keywords = {Phonons, Quantum cascade lasers, waveguide lasers},
	issn = {0003-6951},
	doi = {10.1063/1.3062981},
	author = {Wang, Qijie and Pflugl, Christian and Diehl, Laurent and Federico Capasso and Edamura, Tadataka and Furuta, Shinichi and Yamanishi, Masamichi and Kan, Hirofumi}
}
