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29 January 2008 High-power high-efficiency 2D VCSEL arrays
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We review recent results on high-power, high-efficiency two-dimensional vertical-cavity surface-emitting laser (VCSEL) arrays emitting around 980nm. Selectively oxidized, bottom-emitting single VCSEL emitters with 51% power conversion efficiency were developed as the basic building block of these arrays. More than 230W of continuous-wave (CW) power is demonstrated from a ~5mm x 5mm array chip. In quasi-CW mode, smaller array chips exhibit 100W output power, corresponding to more than 3.5kW/cm2 of power density. High-brightness arrays have also been developed for pumping fiber lasers, delivering a fiber output power of 40W. We show that many of the advantages of low-power single VCSEL devices such as reliability, wavelength stability, low-divergence circular beam, and low-cost manufacturing are preserved for these high-power arrays. VCSELs thus offer an attractive alternative to the dominant edge-emitter technology for many applications requiring compact high-power laser sources.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jean-Francois Seurin, Chuni L. Ghosh, Viktor Khalfin, Aleksandr Miglo, Guoyang Xu, James D. Wynn, Prachi Pradhan, and L. Arthur D'Asaro "High-power high-efficiency 2D VCSEL arrays", Proc. SPIE 6908, Vertical-Cavity Surface-Emitting Lasers XII, 690808 (29 January 2008);

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