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Proceedings Paper

Modal characteristics of 2D antiguided VCSEL arrays
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Paper Abstract

Cold-cavity modal behavior of a 2-D (4x4 square lattice geometry) antiguided vertical cavity surface emitting laser (VCSEL) array is studied by the means of an effective-index model and fiber-mode approximation. The calculations show that the 2-D array can operate under a resonant condition, provided that a resonance in both of the 1-D directions is satisfied. Although out-of-phase and adjacent modes will compete with the in-phase mode around its resonant position, our simulation shows that, with the introduction of inter-element loss, the in-phase mode can be favored to lase for a wide range of inter-element width, s, around its resonant position. The effective-index model is shown to be in qualitative agreement with a more comprehensive (exact) 3-D beam-propagation-based simulation, which takes into account the actual layered structure. The 2-D antiguides are constructed from shifting the cavity resonance between the element and inter-element regions and fabricated by chemically selective etching and two-step MOCVD growth. While both diffraction-limited resonant in-phase and out-of-phase modes are observed from top-emitting arrays, a 2-D bottom-emitting structure is adopted to improve heat removal. Preliminary results of 40 mW pulsed and 10 mW CW powers have been obtained from the junction up and down arrays respectively.

Paper Details

Date Published: 4 June 2002
PDF: 11 pages
Proc. SPIE 4649, Vertical-Cavity Surface-Emitting Lasers VI, (4 June 2002); doi: 10.1117/12.469231
Show Author Affiliations
Delai Zhou, Univ. of Wisconsin/Madison (United States)
Anatoly P. Napartovich, Troitsk Institute of Innovation and Fusion Research (Russia)
Nickolai N. Elkin, Troitsk Institute of Innovation and Fusion Research (Russia)
Dmitri V. Vysotsky, Troitsk Institute for Innovation and Fusion Research (Russia)
Luke J. Mawst, Univ. of Wisconsin/Madison (United States)


Published in SPIE Proceedings Vol. 4649:
Vertical-Cavity Surface-Emitting Lasers VI
Chun Lei; Sean P. Kilcoyne, Editor(s)

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