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Electrically pumped continuous-wave vertical-cavity surface-emitting lasers at ∼2.6 μm

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4 Author(s)
Arafin, S. ; Walter Schottky Institut, Technische Universität München, D-85748 Garching, Germany ; Bachmann, A. ; Kashani-Shirazi, K. ; Amann, Markus-Christian

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In this paper, electrically pumped GaSb-based vertical-cavity surface-emitting lasers operating continuous wave at a record long emission wavelength of ∼2.6 μm are presented. Owing to the excellent thermal heat management, the devices exhibit single-mode operation up to a heat-sink temperature of 55 °C. Lateral current confinement and index guiding in the device are accomplished by utilizing the buried tunnel junction concept. Devices with aperture diameters of 6 μm show maximum output powers of 0.3 mW at room temperature with quantum efficiencies around 10%.

Published in:

Applied Physics Letters  (Volume:95 ,  Issue: 13 )