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 VOLUME     ISSUE     PAGE
DATE RANGE 895,006
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1 Sketch of a microroll that can be fabricated  by rolling up strained layers. The tube wall represents a three- dimensional metamaterial consisting of a metal–semiconductor  superlattice containing quantum wells and metal gratings.
2 Normalized net round-trip gain                                                                                                       G                                                               s                                 p                                                                                                                         as a function of pump-signal and idler-signal phase mismatches                                                                         δ                                                         ν                                                               p                                 s                                                                                    Ω                           L                                                                and                                                                         δ                                                         ν                                                               i                                 s                                                                                    Ω                           L                                                               , respectively, for                                                                         N                           =                                                                                                                              (                                                                           π                                       /                                       2                                                                        )                                                                                             2                                                                                          . GVD is neglected, so the AM and PM eigenmodes are decoupled. (a) Gain for AM eigenmodes, (b) gain for PM eigenmodes.
3 The orthorectified aerial image and 5m DEM of Chiu-Shui River.
4 Source images used in the experiment. Upper, L-R: cosine, cosine2, curls. Lower, L-R: eye, nose, palm. Each image was presented at a size of two degrees of visual angle square.
5 Normalized linear Stokes vector components demonstrate polarization synthesis.
6 Phase distribution of the diffraction pattern observed at                                                                         z                           ∕                           L                           =                           2.0                                                               , caused by a finite-radius SPP with fractional topological charge                                                                         α                           =                           2.5                                                               . We can see the chain of unit strength vortices on the                                                                         +                           x                                                                axis.
7 Decomposition of natural images into Fourier components. (a) All images can be expressed as a sum of 2D Fourier basis functions [e.g., (b)] by taking the sum over all values in (c) the basis-scaled image.
8 Plasmon energy ω in electron volts of a composite gold NT and gold core system, for q=0 and m=2, using ωp=1.37×1016  Hz, plotted versus δ and d, when a1=7  nm.
9 (a)–(d) Color fringe image acquired by a color CCD camera and its RGB components, (e) image results from the division operation applied to image in (b) and (d). The background is clipped to enhance the detail of the fringes, (f) binary image obtained from (d).
10 A helical phase profile                                                          exp                              		                                     (                                 i                                 ℓ                                 ϕ                                 )                                                                                  converts a Gaussian laser beam into a helical mode whose wave fronts resemble an ℓ-fold corkscrew. In this case                                                          ℓ                              =                              3                                                   .
11 Colour “Lena” (a), reconstructed using 51 (b) and 501 (c) independent scans.
12 Schematic setup of the thin disk laser resonator and the pump module.
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