Large object distance and super-resolution graded-index photonic crystal flat lens.
Opt Express
; 27(7): 9601-9609, 2019 Apr 01.
Article
em En
| MEDLINE
| ID: mdl-31045109
ABSTRACT
In order to realize super-resolution imaging of point source at any positions within a large object distance range, a graded-index equivalent medium (GEM) flat lens, which can break through the object distance limit d (d is the lens thickness), is analyzed by negative refraction. Based on this analysis, graded-index photonic crystal (GPC) flat lens with a large object distance is designed. Its imaging resolution can reach up to 0.4λ at the maximum object distance of 5d, which breaks through the diffraction limit.
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MEDLINE
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En
Ano de publicação:
2019
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Article