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1 (a) Schematic of chalcogenide–silica all-solid bandgap fiber. Red: chalcogenide strands. (b) Scanning electron micrograph of endface of a chalcogenide–silica bandgap fiber (core diameter                                                                         7.6                                                       μm                                                               , pitch                                                                         3.8                                                       μm                                                               , hole diameter                                                                         1.45                                                       μm                                                               ) polished by focused-ion-beam milling.
2 Ghost imaging: coincidence measurements of two beams of entangled photons—one of which interacts with an object and one of which doesn’t—can be used to reconstruct a “ghost” image of the object.
3 Schematic diagram of single-prism pulse compressor.
4 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.
5 Liquid-crystal SLMs allow unprecedented control in the generation and detection of structured light fields. (a) Long exposure image of laser light diffracted from the pixelated device. (b) CCD camera image showing the various diffraction orders. Efficiencies are typically in the 60%–85% range.
6 Comparison of x-ray images of (a) cartilage on a chicken’s bone and (e) a tomato. The cartilage is shown clearly in (c) the differential phase image compared to (b) the absorption and (d) the scattering images. The inner structure of the tomato can be seen in (h) the scattering image, whereas (f) the absorption and (g) the differential phase images do not show any profiles.
7 The orthorectified aerial image and 5m DEM of Chiu-Shui River.
8 WFDI-based phase profile of a cardiomyocyte during a single beating cycle, 40 × . White horizontal scale bar represents 10 µm. Vertical color bar is in radians. Dynamics, 120 fps for 1 sec: Media 3.
9 Effect of EOT on spatial information. The central figure shows the input probe beam generated with the DLP before the FWM. The top row shows the entangled images generated by the FWM process before the plasmonic structures, while the lower row shows the entangled images after transduction through the plasmonic structures.
10 Example of color stripe indexing based on De Bruijn sequence                                                                                           (                                 k                                 =                                 5                                 ,                                 n                                 =                                 3                                 )                                                                                  [35].
11 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                                                   .
12 Schematic setup of the thin disk laser resonator and the pump module.
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