Cançado Luiz Gustavo, Naraghi Roxana Rezvani, Dogariu Aristide
Opt Lett. 2017 Mar 15;42(6):1137-1140. doi: 10.1364/OL.42.001137.
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.
我们通过实验证明，在被动近场成像中，通过实施简单的随机照明，可以消除由干扰引起的虚假效应。我们表明，当伪热光源发出的辐射照射样品，并且孔径探头在基本上所有入射角上收集散射场时，典型的成像伪像能够被有效消除。这种新型伪热光源易于实现，显著提高了被动近场成像的性能。
