Visible spectrum native‐oxide coupled‐stripe In0.5(AlxGa1−x)0.5P–In0.5Ga0.5P quantum well heterostructure laser arrays

Autor:	Nick Holonyak, S. C. Smith, R. D. Burnham, S. J. Caracci, Steven A Maranowski, John Dallesasse, F. A. Kish
Rok vydání:	1991
Předmět:	Fabrication Physics and Astronomy (miscellaneous) business.industry Oscillation Chemistry Heterojunction Laser law.invention Semiconductor laser theory Optics law Optoelectronics business Current density Quantum well Visible spectrum
Zdroj:	Applied Physics Letters. 59:2883-2885
ISSN:	1077-3118 0003-6951
DOI:	10.1063/1.105841
Popis:	Data are presented demonstrating the continuous (cw) operation (10–50 °C) of coupled‐stripe In0.5(AlxGa1−x)0.5P–In0.5Ga0.5P multiple quantum well heterostructure (QWH) visible (λ∼655 nm) laser arrays. The ten stripe QWH arrays (3 μm emitters on 4 μm centers) are defined by ‘‘wet’’ oxidation (H2O vapor in N2 carrier gas, 550 °C) of the high gap In0.5(AlxGa1−x)0.5P upper confining layer outside of the active stripes. The gain‐guided arrays exhibit relatively low cw 20 °C threshold current densities (∼1.6 kA/cm2, ∼450 μm cavity) and high output powers of 25 mW per uncoated facet (cw, 20 °C). Optical coupling between stripes results in a near diffraction‐limited single‐lobe far‐field pattern indicative of oscillation in the lowest order supermode of the array (in‐phase operation).
Databáze:	OpenAIRE
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