Gaussian Laser Beams via Oblate Spheroidal Waves
نویسندگان
چکیده
Gaussian beams provide the simplest mathematical description of the essential features of a focused optical beam, by ignoring higher-order effects induced by apertures elsewhere in the system. Wavefunctions ψ(x, t) = ψ(x)e−iωt for Gaussian laser beams [1, 2, 3, 4, 5, 6, 7, 10, 11, 12] of angular frequency ω are typically deduced in the paraxial approximation, meaning that in the far zone the functions are accurate only for angles θ with respect to the beam axis that are at most a few times the characteristic diffraction angle
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