Embedding defect sites into hexagonal nondiffracting wave fields.


We present a highly purposive technique to optically induce periodic photonic lattices enriched with a negative defect site by using a properly designed nondiffracting (ND) beam. As the interference of two or more ND beams with adequate mutual spatial frequency relations in turn reproduces an ND beam, we adeptly superpose a hexagonal and a Bessel beam to… (More)
DOI: 10.1364/OL.37.005009


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