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Combining nanostructures in metamaterials allows precise engineering not only their linear optical properties and dispersion but also the nonlinear response and dynamic optical properties [1, 2]. In particular, hyperbolic metamaterials, based on plasmonic nanorod arrays or metal-dielectric multilayers, provide wealth of exciting possibilities in nonlinear optics offering designed linear and nonlinear...
Control of light propagation is usually obtained by appropriately designing the optical path, that is, the refractive index of the material. Common examples are standard lenses and dielectric waveguides. Recently, a new way to tailor the wave front emerged, based on the Pancharatnam-Berry phase (PBP). The PBP is a geometric phase related to changes in the polarization state of light along its propagation...
Highly accurate sensing of chiral molecules is crucial in drug development as one mirror image (enantiomer) of a chiral molecule can be toxic while the other mirror image can be healing. As the rate of absorption of a chiral molecule is different when illuminated with left-handed circularly polarized light (LCPL) than when illuminated with right-handed circularly polarized light (RCPL), this interaction...
We present a novel concept for THz generation based on non-linear integrated waveguide optics leading to compact, coherent and room-temperature stable THz sources. Our concept is based on non-linear frequency down conversion of near infrared modes in a silicon waveguide with organic electro-optic polymer cladding. Organic electro-optic polymers have an engineered ultra-high non-linearity [1] and can...
One of the biggest challenges in modem Astronomy is the direct detection of extrasolar planets using ground based telescopes. While the small angular separation of the star-planet system is an unchangeable limitation, the contrast ratio can dramatically be improved by shifting the observing wavelength to the mid-infrared. In the astronomical L'-band (3.5–4.1 μm), atmospherical disturbances are relatively...
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