Enhanced Transmission of Light and Particle Waves through Subwavelength Nanoapertures by Far-Field Interference - Physics > OpticsReport as inadecuate




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Abstract: Subwavelength aperture arrays in thin metal films can enable enhancedtransmission of light and matter atom waves. The phenomenon relies onresonant excitation and interference of the plasmon or matter waves on themetal surface. We show a new mechanism that could provide a great resonant andnonresonant transmission enhancement of the light or de Broglie particle wavespassed through the apertures not by the surface waves, but by the constructiveinterference of diffracted waves beams generated by the apertures at thedetector placed in the far-field zone. In contrast to other models, themechanism depends neither on the nature light or matter of the beamscontinuous waves or pulses nor on material and shape of the multiple-beamsource arrays of 1-D and 2-D subwavelength apertures, fibers, dipoles oratoms. The Wood anomalies in transmission spectra of gratings, a long standingproblem in optics, follow naturally from the interference properties of ourmodel. The new point is the prediction of the Wood anomaly in a classicalYoung-type two-source system. The new mechanism could be interpreted as anon-quantum analog of the superradiance emission of a subwavelength ensemble ofatoms the light power and energy scales as the number of light-sourcessquared, regardless of periodicity predicted by the well-known Dicke quantummodel.



Author: S.V. Kukhlevsky

Source: https://arxiv.org/



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