Title

Focal Squeeze In Axicons

Keywords

Diffraction; Wave propagation

Abstract

The on-axis irradiance distribution of a truncated conical wavefront is evaluated in terms of the Fresnel number of the focusing geometry. In agreement with geometrical optics, a focal line of increasing intensity is generated for extremely high Fresnel numbers. Otherwise clear deviations may be observed for the position of the maximum irradiance along the optical axis. A remarkable focal squeeze appears and, for decreasing Fresnel numbers, this effect manifests stronger. An analytical formula is provided for the fast evaluation of the focal squeeze. © 2005 Elsevier B.V. All rights reserved.

Publication Date

10-1-2005

Publication Title

Optics Communications

Volume

254

Issue

1-3

Number of Pages

3-9

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.optcom.2005.05.007

Socpus ID

24644516668 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/24644516668

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