Focusing the electromagnetic wave with a magnetic field

We examine manipulating the electromagnetic (EM) wave with an external static magnetic field (ESMF) taking advantage of the versatility of the magnetic photonic crystal (PC). The effect of a nonuniform ESMF on the permeability of the constituent magnetic material in the PC is demonstrated to create...

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Veröffentlicht in:	Optics letters 2008-11, Vol.33 (21), p.2476-2478
Hauptverfasser:	SHAOWEN CHEN, JUNJIE DU, SHIYANG LIU, ZHIFANG LIN, CHUI, S. T
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied classical electromagnetism Electromagnetic wave propagation, radiowave propagation Electromagnetism electron and ion optics Exact sciences and technology Fundamental areas of phenomenology (including applications) Optical materials Optics Photonic bandgap materials Physics
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Beschreibung
Zusammenfassung:	We examine manipulating the electromagnetic (EM) wave with an external static magnetic field (ESMF) taking advantage of the versatility of the magnetic photonic crystal (PC). The effect of a nonuniform ESMF on the permeability of the constituent magnetic material in the PC is demonstrated to create a gradient of the effective optical index in the crystal, leading to the focusing of the EM wave, with a magnetically tunable focal length, focused waist radius, and the intensity at the focus.
ISSN:	0146-9592 1539-4794
DOI:	10.1364/OL.33.002476