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Long wavelength GaInAsSb-AlGaAsSb distributed-feedback lasers emitting at 2.84 μm

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8 Author(s)
Hummer, M. ; Tech. Phys., Univ. Wurzburg, Germany ; Rossner, K. ; Lehnhardt, T. ; Muller, M.
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Room-temperature continuous-wave operation of a singlemode GaInAsSb/GaSb/AlGaAsSb distributed feedback (DFB) laser is presented at a record long emission wavelength for this material system of 2.843 μm. The threshold current at 20°C is 75 mA. Mode selection was realised by metal gratings laterally patterned to a ridge waveguide. By varying the grating period, DFB emission from 2.738 up to 2.843 μm is obtained.

Published in:

Electronics Letters  (Volume:42 ,  Issue: 10 )