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1 Fundamental mode transverse electric field intensity (Et2) distributions at 1.45 μm (upper figures) and 1.75 μm (lower figures) wavelengths, for nearly zero-dispersion flattened PCFs with Λ=2.3  μm and d=0.61  μm for (a) α=0° and β=0°, (b) α=30° and β=0°, (c) α=0° and β=30°, (d) α=0° and β=0°, (e) α=30° and β=0°, and (f) α=0° and β=30°.
2 Numerical simulations of amplification of white noise by FWM and SRS as a function of propagation length.
3 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.
4 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.
5 (a)–(d) x–z cross sections of the beam intensity are shown as a function of focal depth, zf, for a focused Gaussian beam propagating through in silico fractal medium 2. For each panel, the result for a single simulation is displayed on top, with the corresponding averaged result over N=100 randomly generated fractal media displayed on the bottom. For visualization, all images are self-normalized to a maximum value of 1.
6 20 × 24 pixel scan of a life-size mannequin at 324 m distance. fSample                         = 2 GHz, 7 × 106 pulses s−1, 16 ps histogram binning size, pattern length b = 16384 bits, 2 s per-pixel dwell time. Measurement acquired using a shallow-junction SPAD. (a) Close-up photograph of the scene. (b) Segmented surface plot of the scan, including several pixels locking onto background objects.
7 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                                                   .
8 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.
9 Schematic setup of the thin disk laser resonator and the pump module.
10 Schematic diagram of single-prism pulse compressor.
11 (a) Schematic of a four-taper-segment micropillar cavity. (b) and (c) Electric field density profile of the first- and second-order modes, respectively. (d) Electric field density profile of the third-order mode of the ten-taper-segment micropillar cavity. (e) Mode diagram as a function of taper segment number.
12 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.
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