Visible spectrum native-oxide coupled-stripe In0.5(Al xGa1-x)0.5P-In0.5Ga0.5P quantum well heterostructure laser arrays

F. A. Kish, S. J. Caracci, N. Holonyak, S. A. Maranowski, J. M. Dallesasse, R. D. Burnham, S. C. Smith

Research output: Contribution to journalArticlepeer-review


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).

Original languageEnglish (US)
Pages (from-to)2883-2885
Number of pages3
JournalApplied Physics Letters
Issue number22
StatePublished - 1991
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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