Calculation of second-harmonic wave pattern generated by focused cylindrical vector beams
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- Ohtsu, A., Kozawa, Y. & Sato, S. Appl. Phys. B (2010) 98: 851. doi:10.1007/s00340-009-3833-0
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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.