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.
- optical pumping
- quantum electronics
Hastie, J. E., Hopkins, J. M., Calvez, S., Jeon, C. W., Burns, D., Abram, R. H., ... Dawson, M. D. (2003). 0.5-W single transverse-mode operation of an 850-nm diode-pumped surface-emitting semiconductor laser. IEEE Photonics Technology Letters, 15(7), 894-896. https://doi.org/10.1109/LPT.2003.813446