In InAs quantum dot vertical-cavity gain structures, 980 nm optical pumping gives the highest measured circular polarization of photoluminescence, about 5%, corresponding to an effective spin lifetime of about 40 ps.
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Optimizing spin polarization in quantum dot vertical-gain structures through pump wavelength selection
In InAs quantum dot vertical-cavity gain structures, 980 nm optical pumping gives the highest measured circular polarization of photoluminescence, about 5%, corresponding to an effective spin lifetime of about 40 ps.