Gaussian beam diffraction in free space


  • Paweł Berczyński
  • Yury Kravtsov



In this paper complex geometrical optics (CGO) method is applied for Gaussian beam (GB) diffraction in free space. CGO reduces diffraction description to solving ordinary differential equations for the beam amplitude and for complex curvature of the wave front. We present analytical solutions for GB width, wave front curvature and complex amplitude. Moreover we discuss the influence of beam ellipticity on propagation in free space. Obtained CGO solutions are compared with solutions of diffraction theory, specifically from Kirchhoff-Fresnel integral.

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How to Cite

P. Berczyński and Y. Kravtsov, “Gaussian beam diffraction in free space”, Photon.Lett.PL, vol. 5, no. 1, pp. pp. 26–28, Mar. 2013.