Room-temperature “W” diode lasers emitting at λ≈4.0 μm

Bewley, W. W.; Vurgaftman, I.; Kim, C. S.; Kim, M.; Canedy, C. L.; Meyer, J. R.; Bruno, J. D.; Towner, F. J.
December 2004
Applied Physics Letters;12/6/2004, Vol. 85 Issue 23, p5544
Academic Journal
Type-II “W” diode lasers with ten quantum-well periods operated in pulsed mode to 315 K, where the emission wavelength was 4.02 μm. The devices with uncoated facets had a threshold current density of 145 A/cm2 and slope efficiency of 47 mW/A per facet at 78 K, and displayed a characteristic temperature T0≈46 K in the range 78–300 K.


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