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Emission characteristics of optically pumped GaN-based vertical-cavity surface-emitting lasers

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The laser emission characteristics of a GaN-based vertical-cavity surface-emitting laser with two dielectric distributed Bragg reflectors were investigated under optically pumped operation at room temperature. The laser emitted wavelength at 415.9 nm with an emission linewidth of 0.25 nm and threshold pumping energy of 270 nJ. The laser has a high characteristic temperature of about 278 K and high spontaneous emission coupling factor of 10-2. The laser emission showed single and multiple spot emission patterns with spectral and spatial variations under different pumping conditions.

Published in:

Applied Physics Letters  (Volume:89 ,  Issue: 12 )

Date of Publication:

Sep 2006

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