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Vertical-cavity surface-emitting lasers (VCSELs) have achieved remarkable performance in threshold, speed, and efficiency. However the VCSELs have so far achieved their performance without the benefit of a buried-heterostructure (BH) gain structure. A high quality BH gain structure can be expected to dramatically improve VCSEL performance by eliminating parasitic charging effects in the perimeter...
Data are presented demonstrating a low thermal resistance lithographic laser. An 8 μm vertical-cavity surface emitting laser defined using lithography and epitaxial crystal growth provides output power of 14 mW, slope efficiency of 0.88 W/A corresponding to differential quantum efficiency of 70% and power conversion efficiency of 26%. Low thermal resistance, even without heatsinking, results in high...
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