Passive near-field imaging with pseudo-thermal sources
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Universidade Federal de Minas Gerais
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Artigo de periódico
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We demonstrate experimentally that spurious effects caused by interference can be eliminated in passive near-field imaging by implementing a simple random illumination. We show that typical imaging artifacts are effectively eliminated when the radiation emitted by a pseudo-thermal source illuminates the sample and the scattered field is collected by an aperture probe over essentially all angles of incidence. This novel pseudo-thermal source can be easily implemented and significantly enhances the performance of passive near-field imaging.
Abstract
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Lasers
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Laser sources, Multimode lasers, Point spread function, Random lasers, Spatial resolution, Speckle patterns
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https://opg.optica.org/ol/viewmedia.cfm?uri=ol-42-6-1137&seq=0