Abstract
This paper mainly investigates the multiple confined modes of GaAs L3 photonic crystal two-dimensional (2-D) structure using single layers of InAs quantum dots as active internal light sources. Theoretical calculations for the wavelength, quality ( Q) factors and polarization of modes are compared to experimental data for L3 photonic crystal nanocavities with end-hole displacements for s = 0 a and s = 0.15 a. It is found that a L3 photonic crystal nanocavity includes five resonant modes and an end-hole displacement not only improves the Q factor of the fundamental mode but also strongly redshifts those modes which have large end-hole-field overlaps, thus reordering the modes. This understanding of the high-order modes should be particularly useful for the selective excitation of emitters that are strongly coupled to the cavity.
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