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Spatial coherence of light measured by nanoscattering
Optica ( IF 10.4 ) Pub Date : 2018-01-18 , DOI: 10.1364/optica.5.000067
Kimmo Saastamoinen , Lasse-Petteri Leppänen , Ismo Vartiainen , Ari T. Friberg , Tero Setälä

As complex random electromagnetic fields are increasingly exploited in advanced photonics, the measurement of their statistical properties emerges as a crucial technical issue. For spatial coherence, we employ dipole scattering and report on a nano-optics counterpart of Young’s interferometer with the openings replaced by metallic dipolar nanoparticles. The results are in agreement with those obtained by other methods. The resolution is comparable to the size of the probes, well beyond that in standard techniques. While we consider here random optical beams, the two-probe method finds particular use in electromagnetic near-field optics where customary polarization elements cannot be employed.

中文翻译:

通过纳米散射测量的光的空间相干性

随着高级光子学中越来越多地利用复杂的随机电磁场,对其统计特性的测量成为一个关键的技术问题。对于空间相干性,我们使用偶极子散射,并报告了与杨氏干涉仪相对应的纳米光学器件,其中开口被金属偶极子纳米颗粒取代。结果与通过其他方法获得的结果一致。分辨率可与探针的大小相媲美,远远超出了标准技术中的分辨率。当我们在这里考虑随机光束时,双探针方法在无法使用常规偏振元件的电磁近场光学中找到了特殊的用途。
更新日期:2018-01-19
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