We theoretically investigate the possible increase of the second harmonic generation (SHG) efficiency in silicon compatible waveguides by considering an asymmetrical plasmonic slot waveguide geometry and a χ((2)) nonlinear polymer infiltrating the slot. The needed phase matching condition is satisfied between the fundamental waveguide mode at the fundamental frequency (FF) and second-order wave...

We have developed a luminescent marker using the second harmonic generation (SHG) from noncentrosymmetric BaTiO3 nanocrystals. These nanoparticles are attractive due to their stable, non-saturating and coherent signal with a femtosecond-scale response time and broad flexibility in the choice of excitation wavelength. In this paper, we report the SHG response of BaTiO3 nanocrystals under a circu...

We introduce STORMED hybrid games (SHG), a generalization of STORMED Hybrid Systems [21], which have natural specifications, allow rich continuous dynamics and admit various properties to be decidable. We solve the control problem for SHG using a reduction to bisimulation on game graphs. This reduction generalizes to a greater family of games, which includes o-minimal hybrid games [5]. We also ...

Second-harmonic generation (SHG) in a near-field optical-fiber probe was observed. The tip of the probe consists of a triple-tapered fiber with an aluminum coating. For a fiber probe with an aperture size of 100 nm, the SHG conversion factor was 2.0 x 10(-11)cm(2)/W , which is as large as that of a 5-mm KDP crystal. In a probe-to-probe experiment, we demonstrated that SHG took place at the alum...

On the basis of the Ewald-Kornfeld formulation, we study the effective susceptibility of second-harmonic generation (SHG) in colloidal crystals, which are made of graded metallodielectric nanoparticles with an intrinsic SHG susceptibility suspended in a host liquid. We find a large enhancement and redshift of SHG responses, which arises from the periodic structure, local field effects, and grad...

In this work we set upon showing theoretically that the use of accelerating spatiotemporal Quasi-Phase-Matching (QPM) in media with parametric optical interactions makes it possible to generate a time-reversed replica of the pump pulse envelope in a frequency converted component. We construct the geometrical form for the modulation that will lead to an up-converted envelope-time-reversed replic...

Interfacial tensiometry and second harmonic generation (SHG) spectroscopy were applied to examine the adsorption behavior of lauric acid (LA) at a heptane/water interface. From interfacial tensiometry measurements, the adsorption kinetics of LA was revealed to be diffusion-controlled, and the adsorption constant of LA was estimated to be 9.6 x 10(4) M(-1). The adsorption isotherms obtained by S...