Calculation of second-harmonic wave pattern generated by focused cylindrical vector beams
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We calculated the second-harmonic wave pattern induced by focused cylindrically symmetric, polarized vector beams. The second-order nonlinear polarization was expressed for fundamental electric field components passed through a dielectric interface based on vector diffraction theory. Furthermore, the second-harmonic wave pattern was represented on the basis of the far-field approximate expression derived from the formulation of higher-order harmonic generation including a Green’s function. For a (110) zinc selenide crystal, the calculated forward emission patterns of the second-harmonic wave were eight-figure shaped as observed in experiment.
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- 17.J.-X. Cheng, X.S. Xie, J. Opt. Soc. Am. B 19, 16040 (2002) Google Scholar