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Originally published in Science Express on 12 July 2007
Science 17 August 2007:
Vol. 317. no. 5840, pp. 927 - 929
DOI: 10.1126/science.1143884
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Reports

Radiationless Electromagnetic Interference: Evanescent-Field Lenses and Perfect Focusing

R. Merlin

Department of Physics, The University of Michigan, Ann Arbor, MI 48109–1040, USA. Email: merlin{at}umich.edu


Figure 1 Fig. 1. Subwavelength focusing. (A) Two-dimensional case: |F(y,z)|2 versus Formula from Eq. 3 where F(y,0){propto}eiq0y/(1 + y2/L2) and Formula. (B) Azimuthally symmetric geometry: |{Psi}({rho},z)|2 versus q0{rho} from Eq. 4 where {Psi}({rho},0){propto}J1(q0{rho})/(1 + {rho}2/L2) and Formula. The contour plots show the focal line (A) and ring (B) at z = L. [View Larger Version of this Image (21K GIF file)]
 

Figure 2 Fig. 2. Radiationless interference. (A) Schematic showing a subwavelength plate, represented as a modulated array of linear current sources at z = 0 and the plane showing the focal line. Formula; see Eq. 7. (B) Contour plot of ln|Hy|. (C) Contour plot of |Hy(z,y)/Hy(z,0)|2. The dashed white line at z = L denotes the focal plane. [View Larger Version of this Image (24K GIF file)]
 

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