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We use a density-matrix framework to evaluate the wallplug efficiency of mid-infrared quantum cascade lasers. We assess the limitations to maximum current and internal efficiency, imposed by injection coupling and current leakage, respectively.
Continuous wave optical power of 1.32 W and wallplug efficiency over 7.1 % were demonstrated at 300 K for MOCVD-grown quantum cascade lasers emitting at 4.6 mum.
16 W CW room temperature front facet output optical power and 72% wall plug efficiency were attained in 100-/spl mu/m-aperture laser diodes based on quantum well heterostructure with ultra wide asymmetric waveguide.
Notice of Violation of IEEE Publication Principles<BR><BR>"Design, Fabrication and Characterization of Monolithically Integrated Low Power Photo Transceiver Using Most Cost Effective Solid Phase Epitaxy"<BR>by Fareed Sepehry-Fard<BR>in Proceedings of the 2003 10th International Conference on Communications (ICT), vol I, pp. 650-654<BR><BR>After careful...
Summary form only given. We report on the cw performance of optimized facet-coated InGaAs/InGaAsP/InGaP (/spl lambda/=0.95 /spl mu/m) diode lasers as well as on the improvement in their performance as the facets are passivated by in-situ growth of ZnSe half-wave films. The results represent record-high values for both front-facet-emitted cw power: 2.9 W, as well as maximum cw wallplug efficiency:...
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