Analytical Model of Spin-Polarized Semiconductor Lasers

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Gothgen, Christian
Oszwaldowski, Rafal
Petrou, Athos
Zutic, Igor
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Abstract
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We formulate an analytical model for vertical-cavity surface-emitting lasers (VCSELs) with injection (pump) of spin-polarized electrons. Our results for two different modes of carrier recombination allow for a systematic analysis of the operational regimes of the spin-VCSELs. We demonstrate that threshold reduction by electrically-pumped spin-polarized carriers can be larger than previously assumed possible. Near the threshold, such VCSELs can act as effective non-linear filters of circularly-polarized light, owing to their spin-dependent gain.
Comment: 4 pages, 3 figures
Keywords
Condensed Matter - Other Condensed Matter
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