Planar single‐facet teardrop‐shaped AlxGa1−xAs‐GaAs quantum well heterostructure laser

Autor:	Nick Holonyak, Michael R. Krames, S. J. Caracci, M. J. Ries
Rok vydání:	1993
Předmět:	Facet (geometry) Materials science Physics and Astronomy (miscellaneous) business.industry Heterojunction Laser Semiconductor laser theory law.invention Longitudinal mode Resonator Optics law Continuous wave Optoelectronics business Quantum well
Zdroj:	Applied Physics Letters. 63:1818-1820
ISSN:	1077-3118 0003-6951
DOI:	10.1063/1.110673
Popis:	Data are presented demonstrating the laser operation of an AlxGa1−xAs‐GaAs quantum well heterostructure (QWH) crystal patterned into a smoothly curved folded resonator, a ‘‘teardrop’’‐shaped resonator, with a single output facet. A deep AlxGa1−xAs native oxide formed entirely through the top confining layer is utilized to produce a large effective index step for lateral optical confinement. The teardrop‐shaped laser operates primarily in a TM (transverse magnetic) longitudinal mode polarized with a TM/TE (transverse electric) power ratio of 7:1. Continuous wave 300 K threshold currents as low as ∼127 mA, external differential quantum efficiencies of η∼15%, and total output power in excess of 75 mW (uncoated facet) are achieved.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::78e087f9230d06d9387cca191d967f04 https://doi.org/10.1063/1.110673 Zobrazit plný text záznamu