13 Super-Resolution Microscopy Techniques Based …
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Fig. 13.21 a Experimental testing of angular (a, b) and polarization (c) performance of the magnifying fisheye lenses at λ = 488 nm. The scale bar length is 5 µm in all images
edge. While the near field fiber tip emits unpolarized light, polarization properties
of the images produced by these lenses can be separated into the TM and TE contributions with respect to the plane of incidence of the source light. These polarization
properties are illustrated in Fig. 13.21. They demonstrate excellent agreement with
theoretical predictions.
Based on the images of lens testing presented in Fig. 13.22, we may evaluate image
resolution and magnification of the fabricated magnifying Maxwell fisheye lenses.
The optical resolution appears to be almost diffraction-limited (~0.6λ at 488 nm),
while the measured magnification is very close to the design values.
The theoretically predicted broadband performance of the Maxwell fisheye lenses
has been verified in the λ = 488−633 nm range, as illustrated in Fig. 13.23. It
is similar to the broadband cloaking performance demonstrated in [19], since the
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