期刊
APL PHOTONICS
卷 4, 期 10, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.5113650
关键词
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资金
- Australian Research Council [DP160100983, FT140100514]
- Australian Research Council [FT140100514] Funding Source: Australian Research Council
Spatial frequency filtering is a fundamental enabler of information processing methods in biological and technical imaging. Most filtering methods, however, require either bulky and expensive optical equipment or some degree of computational processing. Here, we experimentally demonstrate real-time, on-chip, all-optical spatial frequency filtering using a thin-film perfect absorber structure. We experimentally demonstrate edge enhancement of an amplitude image and conversion of phase gradients to intensity modulation in an image. The device is used to demonstrate enhancement of an image of pond algae. (C) 2019 Author(s).
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