Nonlinear harmonic wave manipulation in nonlinear scattering medium via scattering-matrix method

Wave interactions and wave-structure scattering in nonlinear patterned waveguides

The nonlinear interactions between discrete optical solitons that propagate in different regimes of diffraction, and the nonlinear scattering of dispersive waves by local optical potentials, were studied experimentally. It is well known in electromagnetism that when linear coherentwavesmeet they interferewithout interactions. Linearwaves also scatter through local optical structureswithout exch...

Shockwave based nonlinear optical manipulation in densely scattering opaque suspensions.

Optical manipulation of particulate-loaded, highly scattering (opaque) suspensions is considered impossible. Here we demonstrate theoretically and experimentally optical manipulation of the local properties of such opaque suspensions. We show that the optical forces exerted by multiply-scattered light give rise to dense shock fronts of particle concentration, propagating deep inside the opaque ...

Nonlinear Mie theory for second-harmonic and sum-frequency scattering

We present a theory for second-order nonlinear light scattering from spherical particles using source waves of arbitrary frequency and direction based on a combination of linear Mie scattering and reciprocity theory. The theory presented in this work extends existing theory applied to second-harmonic scattering by allowing noncollinear excitation waves of unequal frequency. The absence of an in...

Modelling of nonlinear wave scattering in a delaminated elastic bar

Integrity of layered structures, extensively used in modern industry, strongly depends on the quality of their interfaces; poor adhesion or delamination can lead to a failure of the structure. Can nonlinear waves help us to control the quality of layered structures? In this paper, we numerically model the dynamics of a long longitudinal strain solitary wave in a split, symmetric layered bar. Th...

Nonlinear waves and wave scattering in layered elastic waveguides