Spin-polarized vertical-cavity surface-emitting lasers (VCSELs) are known to exhibit superior properties over conventional laser diodes, e.g., ultrafast periodic oscillations whose frequency reaches 250 GHz or even higher. Here, we are particularly interested in such period-one (P1) oscillation, which has found considerable interest for applications in microwave photonics. Based on the spin-flip model, we are able to show that the oscillation amplitude is sensitive to some key parameters. This indicates that the amplitude of the P1 oscillations offered by spin-VCSELs could be optimized by appropriate laser design or parameter setting.
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