Mode switching in a multi-wavelength distributed feedback quantum cascade laser using an external micro-cavity

Autor:	Tobias S. Mansuripur, Jérôme Faist, Jae-Hyun Ryou, C. Y. Wang, Pauline Métivier, Russell D. Dupuis, Yong Huang, Romain Blanchard, Federico Capasso, Meinrad Sidler, Patrick Rauter
Rok vydání:	2014
Předmět:	Physics Distributed feedback laser Fabrication Physics and Astronomy (miscellaneous) business.industry Physics::Optics Grating Q-switching law.invention Wavelength Optics law Optoelectronics business Quantum cascade laser Lasing threshold Diffraction grating
Zdroj:	Applied Physics Letters. 104:051102
ISSN:	1077-3118 0003-6951
Popis:	We demonstrate a multi-wavelength distributed feedback (DFB) quantum cascade laser (QCL) operating in a lensless external micro-cavity and achieve switchable single-mode emission at three distinct wavelengths selected by the DFB grating, each with a side-mode suppression ratio larger than 30 dB. Discrete wavelength tuning is achieved by modulating the feedback experienced by each mode of the multi-wavelength DFB QCL, resulting from a variation of the external cavity length. This method also provides a post-fabrication control of the lasing modes to correct for fabrication inhomogeneities, in particular, related to the cleaved facets position.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2ae373fd1ead28223b3552886f280fc2 https://doi.org/10.1063/1.4863663 Zobrazit plný text záznamu