Because of its superior performance, infrared lasers are frequently employed in medical detection, infrared imaging, gas detection, and space optical communication. This work proposes a new simple energy band structure for radiation at room temperature, based on energy band simulation. The results showed that the components for Ga0.34In0.66As/Al0.68In0.32As, as potential well/base layer, by optimizing the core area, in this simple cascade cycle structure can achieve high - optical gain. By growing two different strain superlattices, the growth rate and composition of superlattices are calculated, and finally the growth of epilayer without mis-matches is realized. AFM analysis sample has good surface morphology.
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