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1篇 您的检索式：作者名="Gerd Leuchs"

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		题名	作者	年代	出处	被引量
	1	Experimental demonstration of linear and spinning Janus dipoles for polarisation-and wavelength-selective near-field coupling显示文摘The electromagnetic field scattered by nano-objects contains a broad range of wavevectors and can be efficiently coupled to waveguided modes.The dominant contribution to scattering from subwavelength dielectric and plasmonic nanoparticles is determined by electric and magnetic dipolar responses.Here,we experimentally demonstrate spectral and phase selective excitation of Janus dipoles,sources with electric and magnetic dipoles oscillating out of phase,in order to control near-field interference and directional coupling to waveguides.We show that by controlling the polarisation state of the dipolar excitations and the excitation wavelength to adjust their relative contributions,directionality and coupling strength can be fully tuned.Furthermore,we introduce a novel spinning Janus dipole featuring cylindrical symmetry in the near and far field,which results in either omnidirectional coupling or noncoupling.Controlling the propagation of guided light waves via fast and robust near-field interference between polarisation components of a source is required in many applications in nanophotonics and quantum optics.	Michela F.Picardi Martin Neugebauer Jorg S.Eismann Gerd Leuchs Peter Banzer Francisco J.Rodriguez-Fortuno Anatoly V.Zayats	2019	Light(Science & Applications)2019，8，1：	4

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