Incremental efficiency enhancement and r.f. response of GaAs-GaAlAs double-heterostructure stripe lasers

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Abstract
Measurements of the photon-electron resonance frequency ωr on stripe lasers with nonlinear light-output/current characteristics have been made. It is found that ωr2 is not proportional to the steady bias light, as conventional theory states, but is approximately proportional to the current above threshold. A new theory is presented which accounts for the nonlinear light/current characteristics, including incremental efficiency enhancement and the changes of the resonance frequency with current.

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