Noncollinear excitation of surface electromagnetic waves: Enhancement of nonlinear optical surface response

Sub-wavelength ripple formation on various materials induced by tightly focused femtosecond laser radiation

“…The classical theory of ripple formation [2,3] has a good accuracy in forecasting ripple formation for non ultra short pulsed laser radiation, so a first appropriate procedure is to supplement the theory with characteristics of the interaction of femtosecond laser radiation with matter. Therefore, a preliminary explanation for the formation of the material dependent sub-wavelength ripples formation is the interaction of the incident wave with surface electromagnetic waves (SEW) [26] (e.g. plasmons [27,28]) additionally taking into account multi-photon processes and the change of material properties due to the high intensity during pulse.…”

Photothermal-reaction-assisted two-photon lithography of silver nanocrystals capped with thermally cleavable ligands

“…Metallic nanoparticles ͑MNPs͒ have attracted much attention due to their unique light-matter interactions. [1][2][3][4][5][6][7] Excitation of the surface plasmon band of MNPs by ultrafast laser pulses is known to induce strong local heating. [8][9][10] Moreover, "hot" electrons generated under ultrafast laser excitation can exist in a nonequilibrium state ͑i.e., non-Fermi distribution͒ within the lattice of MNPs.…”

Numerical investigation of the excitation of surface plasmon polariton on a periodic surface nanograting composed of metallic nanowires

“…The solution of the vector's Maxwell's equations provides the expressions for the partial reflection and transmission coefficient of a separate inhomogeneous layer. Note, that th is ap proach was used in [19][20][21] to calcu late th e in tensity o f bo th lin ear and non linear op tical respo nse of p eriodic metallic diffraction gratings as a function of (i) the light angle, wavelength, and (ii) polarization of the incident wave, as well as o f (iii) th e ro tation an gle of t he g rating arou nd its normal. Th e calcu lation results agree well with the experimental data.…”

“…Th e calcu lation results agree well with the experimental data. [19][20][21] Within the bounds of the second method the field in the range of the grating is expressed in terms of ei genmodes of t he g rating, whe reas t he field o ut of t he rang e of t he grat ing i s exp ressed i n t erms of t he R ayleigh series. 22,23 Th e fi rst method i s sui ted for periodic g ratings wi th ar bitrary pr ofile.…”