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(Color online) (a) Plan view SEM image indicating the positions of interest of (i)–(iv): nanocavity, 2D-PC, membrane, and bulk, respectively. The main panel shows 3D calculations of the photonic band structure for a PC nanocavity with a reduced symmetry defect and . Continuum bands are denoted by the gray shaded regions enclosing the PBG and the cavity modes M1 and M2 (full blue lines). (b) Typical spectrum recorded from the cavity showing the QD emission throughout the PBG and the cavity modes. The calculated D-field distribution for the two cavity modes is also presented.
(Color online) (a) Typical decay transients recorded from QDs emitting in the unpatterned GaAs membrane, the PC and in the defect nanocavity. (b) Spontaneous emission rates as a function of the wavelength for different measurement positions (i)–(iii). The full gray line shows the spectrum for comparison. (lower panel) Ratio of the measured decay rates from QDs in the unpatterned region of the sample and the slow component close to the cavity site.
(Color online) Spatially dependent measurements of SE dynamics and photon collection efficiency, tracing a line through the center of the cavity. (lower panel) SE rate for QDs emitting at (filled squares) and (filled circles), respectively. (upper panel) The corresponding time integrated PL intensity for the same two detection wavelengths.
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