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Proceedings Paper

VCSELs in '98: what we have and what we can expect
Author(s): Larry A. Coldren; Eric R. Hegblom; Yuliya A. Akulova; Jack Ko; Eva M. Strzelecka; Syn-Yem Hu
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Paper Abstract

Recent results from the authors group are summarized as a general indicator of the current state of the art in vertical-cavity surface-emitting lasers (VCSELs). These include results from engineered-aperture VCSELs with high wall-plug efficiencies at low powers, high-efficiency bottom-emitting cryo-VCSELs with wavelengths < 900 nm, low-threshold AlGaInAs VCSELs emitting at 850 nm, and arrays of VCSELs used in parallel free-space links as well as WDM arrays butt-coupled to multimode fiber. Analysis indicates that size-dependent losses limit the scaling of VCSELs below 5 micrometers in diameter unless special engineered apertures and/or short cavities are used. The analysis also shows that lateral carrier confinement is necessary to obtain efficient devices below 2 micrometers in diameter.

Paper Details

Date Published: 20 April 1998
PDF: 15 pages
Proc. SPIE 3286, Vertical-Cavity Surface-Emitting Lasers II, (20 April 1998); doi: 10.1117/12.305446
Show Author Affiliations
Larry A. Coldren, Univ. of California/Santa Barbara (United States)
Eric R. Hegblom, Univ. of California/Santa Barbara (United States)
Yuliya A. Akulova, Univ. of California/Santa Barbara (United States)
Jack Ko, Univ. of California/Santa Barbara (United States)
Eva M. Strzelecka, Univ. of California/Santa Barbara (United States)
Syn-Yem Hu, Univ. of California/Santa Barbara (United States)


Published in SPIE Proceedings Vol. 3286:
Vertical-Cavity Surface-Emitting Lasers II
Kent D. Choquette; Robert A. Morgan, Editor(s)

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