By placing quantum-dot emitters at different positions in the cavity mode of the electric field within a GaAs-Al0.95Ga0.05As micropillar, the effects of noncavity modes on Purcell factor, β factor, and collection efficiency are quantified, with results suggesting common experimental practice systematically overestimates the Purcell factor. It is also shown that the zero-phonon line and phonon-assisted emission into the cavity mode HE₁₁ is suppressed by positioning dots at the field node.
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Jordan et al. (2024) studied this question.
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