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(Color online) (a) Scheme of the mask and [(b) and (c)] of the growth sequence, selective-area growth of InP pyramids containing InAs QDs and regrowth of a passive waveguide structure.
(Color online) [(a)–(c)] Top-view SEM images of the InAs QDs formed on top of the truncated InP pyramids with reducing base width. [(d)–(f)] Micro-PL spectra taken at of the InAs QDs formed on top of the truncated InP pyramids with reducing QD number. In (f) temperature dependent micro-PL spectra of the single QD are also shown.
(Color online) [(a) and (b)] Cross-sectional SEM images of the regrown passive waveguide structure around the InP pyramids containing InAs QDs at different magnifications.
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