Abstract
We review our study aimed at the creation of a unipolar laser with the efficient suppression of nonradiative relaxation between the laser subbands owing to strongly asymmetric-in-height barriers surrounding an active element. The asymmetry of the barriers causes the existence of a lower laser subband only within a narrow region of in-plane momenta. In such a way, one-phonon relaxation between the laser subbands can be significantly suppressed.
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Aleshchenko, Y.A., Kapaev, V.V. & Kopaev, Y.V. Structures with variable dimensionality of electronic states for unipolar lasers. J Russ Laser Res 31, 533–553 (2010). https://doi.org/10.1007/s10946-010-9175-x
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DOI: https://doi.org/10.1007/s10946-010-9175-x