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We investigate theoretically and experimentally the nonlinear propagation of surface plasmons on an air/gold interface which reveals large and ultrafast (∼100 fs) self-induced absorption. The experiment enables a direct measurement of the third-order nonlinear susceptibility.
We demonstrate a high-efficiency, photon-number resolving transition edge sensor, integrated on an optical silica waveguide structure. The detector consists of three individual absorber/sensor devices providing a total system detection efficiency of up to 93% for single photons at a wavelength of 1551.9 nm. This new design enables high fidelity detection of quantum information processes in on-chip...
A ternary rare-earth oxide (REO) up-conversion layer was deposited on monocrystalline thin film solar cells to demonstrate up-conversion of sub-band-gap solar radiation into the spectral range of silicon. Laser radiation from 1520 nm to 1560 nm was shown to generate an additional photocurrent in the underlying silicon solar cell. Through combinations of rare-earth ions, portions of the sub-band-gap...
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