Maxima of the power density of the second–harmonic generation from a linear structure of long cylindrical dielectric particles

Abstract

The problem of second–harmonic generation by a plane electromagnetic wave from a linear structure of long cylindrical dielectric particles coated by an optically nonlinear substance is solved for the far field region using the Rayleigh–Gans–Debye approximation. The directions in which maximal intensity of the generated radiation occurs and the directions in which no generation occurs have been found. It is revealed that the maximal power density of second harmonic generation from the structure is proportional to the square of the number of cylinders.