Effect of cavity length on 1.55 μm buried-heterostructure DH laser characteristics

Abstract
Various parameters in 1.55 μm buried-heterostructure DH laser design are obtained by simple analytical approximations and the effect of cavity length on laser characteristics. Threshold current density is found to vary strongly (3–10 kA/cm2) with cavity length when cleaved short enough. Interference in far-field patterns is shown to depend on cavity length.

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