Nathan C. Palmquist, Jared A. Kearns, Stephenn M Gee, Arturo Juan, Srinivas Gandrothula, Michael Lam, S. Denbaars, S. Nakamura
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引用次数: 0
Abstract
We report long cavity (65lambda) GaN-based vertical-cavity surface-emitting lasers (VCSELs) with a topside dielectric concave mirror, an ion implanted current aperture, and a bottomside nanoporous GaN distributed Bragg reflector. Under pulsed operation, a VCSEL with a 10µm aperture and a curved mirror with a radius of curvature (ROC) of 120µm had a threshold current density of 14kA/cm2, and a maximum output power of 370µW for a lasing mode at 404.5nm. The longitudinal performance has a side-mode suppression ratio of 30dB up to a current density of approximately 40kA/cm2. Multiple transverse mode profiles are observed across several devices.
期刊介绍：
Applied Physics Express (APEX) is a letters journal devoted solely to rapid dissemination of up-to-date and concise reports on new findings in applied physics. The motto of APEX is high scientific quality and prompt publication. APEX is a sister journal of the Japanese Journal of Applied Physics (JJAP) and is published by IOP Publishing Ltd on behalf of the Japan Society of Applied Physics (JSAP).
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