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Optics Letters

Optics Letters


  • Vol. 25, Iss. 24 — Dec. 15, 2000
  • pp: 1792–1794

Scalar field of nonparaxial Gaussian beams

Z. Ulanowski and I. K. Ludlow  »View Author Affiliations

Optics Letters, Vol. 25, Issue 24, pp. 1792-1794 (2000)

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A family of closed-form expressions for the scalar field of strongly focused Gaussian beams in oblate spheroidal coordinates is given. The solutions satisfy the wave equation and are free from singularities. The lowest-order solution in the far field closely matches the energy density produced by a sine-condition, high-aperture lens illuminated by a paraxial Gaussian beam. At the large waist limit the solution reduces to the paraxial Gaussian beam form. The solution is equivalent to the spherical wave of a combined complex point source and sink but has the advantage of being more directly interpretatable.

© 2000 Optical Society of America

OCIS Codes
(140.3430) Lasers and laser optics : Laser theory
(260.2110) Physical optics : Electromagnetic optics

Z. Ulanowski and I. K. Ludlow, "Scalar field of nonparaxial Gaussian beams," Opt. Lett. 25, 1792-1794 (2000)

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