منابع مشابه
Shaping the nonlinear near field.
Light scattering at plasmonic nanoparticles and their assemblies has led to a wealth of applications in metamaterials and nano-optics. Although shaping of fields around nanostructures is widely studied, the influence of the field inside the nanostructures is often overlooked. The linear field distribution inside the structure taken to the third power causes third-harmonic generation, a nonlinea...
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A R TI CL E Abstract Surface-plasmon-polariton waves are twodimensional electromagnetic surface waves that propagate at the interface between a metal and a dielectric. These waves exhibit unusual and attractive properties, such as high spatial confinement and enhancement of the optical field, and are widely used in a variety of applications, such as sensing and subwavelength optics. The ability...
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We demonstrate high-resolution near-field imaging and spectroscopy using the nonlinear optical response of a gold nanoparticle pair as an excitation photon source. Femtosecond pulses of frequencies omega(1) and omega(2) are used to induce a nonlinear polarization at the four wave mixing (4WM) frequency 2omega(1) - omega(2) in the junction of the nanoparticle dimer. The nonlinear response leads ...
متن کاملTwo-dimensional nonlinear beam shaping.
We develop a technique for two-dimensional arbitrary wavefront shaping in quadratic nonlinear crystals by using binary nonlinear computer generated holograms. The method is based on transverse illumination of a binary modulated nonlinear photonic crystal, where the phase matching is partially satisfied through the nonlinear Raman-Nath process. We demonstrate the method experimentally showing a ...
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ژورنال
عنوان ژورنال: Nature Communications
سال: 2016
ISSN: 2041-1723
DOI: 10.1038/ncomms10361