Abstract
We study theoretically and experimentally superradiant dynamics in multiple-section GaAs/AlGaAs laser structures. We develop a model based on the one-dimensional Maxwell curl equations without making use of the slowly-varying envelope approximation and demonstrate that strong transient periodic modulation of both e – h density and refractive index drastically affect the dynamics of emission generation in semiconductor media. We show that the coherent λ/2 transient population and the relative permittivity gratings facilitate e – h self-ordering and the onset of the superradiant phase transition in the e – h system.
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Vasil’ev, P.P. Impact of Transient Population Grating on the Superradiant Phase Transition in Semiconductor Laser Structures. J Russ Laser Res 41, 181–190 (2020). https://doi.org/10.1007/s10946-020-09863-z
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DOI: https://doi.org/10.1007/s10946-020-09863-z