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Lecture 14 - Extraordinary optical transmission through very small apertures (student presentation)

Lecture 14 - Extraordinary optical transmission through very small apertures (student presentation)

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Extraordinary optical transmission through very small apertures Lutalo Webb Weiqiang Chen Jie Liu Jan Trieschmann Priyaranga (Ranga) Koswatta
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Outline Background / History Physics Single Hole Apertures Hole Arrays Applications Conclusion 2
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Background Wave propagation through apertures crucial for many applications Imaging, data storage, telecommunication Problems emerge due to decreasing dimensions Smaller dimensions (d < λ ) → classical diffraction theory not sufficient (for our purpose) 3
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Far History Classical diffraction theory well established Christiaan Huygens (1678): “ Traite de la Lumiere Huygens-Fresnel principle Plane wave is superposition of point-sources Dimensions: d ~ λ / 2 Experimental evidence by Thomas Young (1803): “Experiments and Calculations Relative to Physical Optics” 4
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