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Structures of the non-SL and SL samples grown and examined in this study. Non-SL sample is the normal 20-pair DBR and the SL sample has been inserted with three sets of 5.5 periods of SL in the 20-pair DBR.
Plane-view optical microscope images of the 20 periods of DBRs for (a) non-SL sample and (b) SL sample.
TEM cross-sectional image of the SL sample for (a) top 17 pairs of DBR structure, and (b) one set of SL.
Reciprocal space maps of (a) non-SL and (b) SL samples.
Reflectivity spectra of 20-pair DBRs of (a) non-SL and (b) SL samples.
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