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Schematic illustration of VCSEL-based coupled PhCH islands.
Simulated near-field amplitude patterns (a) and far-field (b) intensity patterns of the bonding and antibonding states of coupled islands (dashed white squares) separated by three lattice periods. The white curve is the slowly varying photonic envelope function calculated along the dashed white line. Far-field line scans (c) of principal lobe along at for the bonding and antibonding modes as well as for the solitary island (S); , .
Measured near-field (a) and (gamma-corrected) far-field (b) intensity patterns of lasing VCSEL array PhCH containing two islands separated by three lattice periods (islands are indicated by dashed lines). The insets in (b) show the details of the fine structure splitting of the fundamental lobes. Far-field line scans (c) of a principal lobe measured at different relative excess above threshold ; , .
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