Abstract

To overcome the serious current crowding effect in top-emitting vertical cavity surface emitting lasers (VCSELs) with large aperture, a distributed-ring-contact (DRC) VCSEL is proposed and demonstrated. A maximal cw light output power of more than 0.3W and a wall-plug efficiency of 17.4% are achieved for a 300μm-diameter VCSEL. The DRC VCSEL exhibits a more homogeneous emission profile, and the laser emits at 803.3nm with a narrow spectrum (less than 0.2nm FWHM).

© 2011 Optical Society of America

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