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Reflectivity spectra of the Bragg mirror and of four microcavity samples (S1–S4) with different cavity lengths. For clarity, the spectra of the different samples are shifted in vertical direction by with respect to each other. The inset shows the theoretically (dashed curve) and experimentally (triangles) obtained finesse of the microcavities as a function of the mode energy.
(a) PL spectra of a HgTe NC reference layer at temperatures ranging from 25 to 75 °C with steps of . Dashed vertical lines indicate the mode positions of the different microcavity samples. (b) Arrhenius plot of the PL peak intensity. (c) Normalized PL spectra of the microcavity samples at room temperature.
(a) Power dependence of PL peak intensity for microcavity structures S1, S3, and S4. (b) PL intensity as a function of the half divergence angle. The fitted Gauss function results in a total beam divergence of 2.6° for S1 and 4.6° for S4.
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