Deterministic nanoantenna array design for stable plasmon-enhanced harmonic generation

Surface-Plasmon-Enhanced Third-Order Harmonic Generation of Organic Materials

We design and fabricate metallic photonic crystals that are integrated with highly-efficient third-order nonlinear polymers. Compared with nanoparticle-doped composite materials, metallic photonic crystals are favorable due to the presence of Bragg-grating-modulated surface plasmon polaritons (SPPs) with strong light localization in large spatial volumes to uniformly enhance the harmonic signal...

Design of a Series Dr Nanoantenna Array for Optical Frequencies

Suitably shaped metal nanostructures acts as resonant optical antennas that efficiently collect light an confine it to a sub wavelength volume which has been modified by using the dielectric resonators working at optical frequencies. In radio frequencies and microwaves a category of antenna known as dielectric resonator antenna (DRA), whose radiant element is dielectric resonator (DR). In this ...

Plasmon signatures in high harmonic generation

High harmonic generation in complex multi-electron systems is investigated theoretically. The harmonic spectra exhibit two cutoffs. The first cutoff is in good agreement with the well established, single active electron cutoff law. The second cutoff presents a signature of multi-electron dynamics. The strong laser field excites nonlinear plasmon oscillations. Electrons that are ionized from one...

Phase Matching for Surface Plasmon Enhanced Second Harmonic Generation in a Gold Grating Slab

Plasmon-assisted high-harmonic generation in graphene

High-harmonic generation in condensed-matter systems is both a source of fundamental insight into quantum electron motion and a promising candidate to realize compact ultraviolet and ultrafast light sources. While graphene is anticipated to efficiently generate high-order harmonics due to its anharmonic charge-carrier dispersion, experiments performed on extended samples using THz illumination ...