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0.5-W single transverse-mode operation of an 850-nm diode-pumped surface-emitting semiconductor laser

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9 Author(s)
J. E. Hastie ; Inst. of Photonics, Univ. of Strathclyde, Glasgow, UK ; J. -M. Hopkins ; S. Calvez ; Chan Wook Jeon
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We report the power scaling of a diode-pumped GaAs-based 850-nm vertical external-cavity surface-emitting laser, by use of an intracavity silicon carbide (SiC) heatspreader optically contacted to the semiconductor surface. To our knowledge, this is the first demonstration of bonding of SiC to a III-V semiconductor structure using the technique of liquid capillarity. High output power of >0.5 W in a circularly symmetric, TEM/sub 00/ output beam has been achieved with a spectral shift of only 0.6 nm/W of pump power. No thermal rollover was evident up to the highest pump power available, implying significant further output-power scaling potential using this approach.

Published in:

IEEE Photonics Technology Letters  (Volume:15 ,  Issue: 7 )