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We systematically studied the lasing characteristics in photonic polycrystalline and amorphous structures under optical pumping. The lasing modes are spatially localized, and blue shift as the structural order becomes short ranged.
We demonstrated lasing in two-dimensional Thue-Morse structures fabricated in InAs quantum dots embedded GaAs membrane. We optimized structural aperiodicity by gradually changing the relative size of two scatters for the strongest light confinement.
A golden-angle spiral lattice can posses an omnidirectional photonic bandgap despite the lack of translational and rotational symmetries. We show that the band edge modes are spatially localized and possess discrete angular momenta.
Quantitative attribute partition is an important work of association rule mining, which is widely applied in industrial control at present, and the current partition methods are not suitable for the industrial database, which is generally large, high-dimensional and coupling. The paper proposes a density-based quantitative attribute partition algorithm for industrial database. The proposed algorithm...
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