Broadband quantum cascade laser emitting from 7.7to8.4μm operating up to 340K

Autor:	M. R. Soulby, Matthew J. Steer, John W. Cockburn, Luke R. Wilson, Mark Hopkinson, Wing H. Ng, Huiyun Liu, E. A. Zibik
Rok vydání:	2007
Předmět:	Distributed feedback laser Chemistry business.industry Far-infrared laser Physics::Optics General Physics and Astronomy Laser law.invention Semiconductor laser theory Optics law Quantum dot laser Cascade Optoelectronics business Quantum cascade laser Lasing threshold
Zdroj:	Journal of Applied Physics. 101:046103
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.2472196
Popis:	A broadband midinfrared laser operating up to 340K in pulsed mode is presented. It was realized by incorporating seven different quantum cascade active regions with 0.2μm increments to emit at different wavelengths. Despite the relatively large wavelength increments, a continuous lasing spectrum is obtained from 7.7to8.4μm, with significant improvements in threshold current and temperature performance compared with previously reported broadband quantum cascade lasers. A full temperature dependent characterization was performed, and the threshold current density at 300K was 6.5kA∕cm2, with peak output power of over 100mW. A characteristic temperature of T0=192K was obtained.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::338a1d8a030c583b155375f560e95045 https://doi.org/10.1063/1.2472196 Zobrazit plný text záznamu