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Strongly frequency dependent focusing efficiency of a concave lens based on two-dimensional photonic crystals
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10.1063/1.2159105
/content/aip/journal/apl/88/1/10.1063/1.2159105
http://aip.metastore.ingenta.com/content/aip/journal/apl/88/1/10.1063/1.2159105
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Dispersion diagrams for the TE (a) and TM (b) polarizations. Intervals where the PC has a are schematically indicated in both diagrams. (c) Top view of the concave lens; structural dimensions are indicated.

Image of FIG. 2.
FIG. 2.

(a) The strongest focusing effect obtained so far for TE and TM polarizations; IG as a function of wavelength for TE (b) and TM (d) polarizations. The refractive index of the lens is obtained from applying the “thin lens formula” from geometrical optics to the measured focus distances.

Image of FIG. 3.
FIG. 3.

Focusing area calculated using FWHM versus the wavelength for (a) TE and (b) TM polarizations. For the purpose of comparison, the theoretical limit for focusing area stipulated by geometrical optics is illustrated.

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/content/aip/journal/apl/88/1/10.1063/1.2159105
2006-01-03
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Strongly frequency dependent focusing efficiency of a concave lens based on two-dimensional photonic crystals
http://aip.metastore.ingenta.com/content/aip/journal/apl/88/1/10.1063/1.2159105
10.1063/1.2159105
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