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  1. 1 2006

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  1. 1 Buske S.

  2. 1 Kravtsov Y.

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Divergence of geometrical optics series at the boundary of its applicability: An analytical example in elementary functions (2D Gaussian beam in free space)

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Kravtsov Y., Buske S.
Open Physics
|
2006
|
vol. 4
|
issue 1
1-7
EN
An analytical example in elementary functions is presented (2D Gaussian beam diffraction in free space), which demonstrates the divergence of the geometrical optics (GO) series when the conditions for its applicability are violated. This example shows that accounting for higher terms in GO power series leads to divergence and therefore becomes completely useless beyond the boundaries of GO applicability.
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