Title

Pre-engineered abruptly autofocusing beams

Authors

Authors

I. Chremmos; N. K. Efremidis;D. N. Christodoulides

Comments

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Abbreviated Journal Title

Opt. Lett.

Keywords

AIRY BEAMS; Optics

Abstract

We introduce a new family of (2 + 1)D light beams with pre-engineered abruptly autofocusing properties. These beams have a circularly symmetric input profile that develops outward of a dark disk and oscillates radially as a sublinear-chirp signal, creating a series of concentric intensity rings with gradually decreasing width. The light rays involved in this process form a caustic surface of revolution that bends toward the beam axis at an acceleration rate that is determined by the radial chirp itself. The collapse of the caustic on the axis leads to a large intensity buildup right before the intended focus. This ray-optics interpretation provides valuable insight into the dynamics of abruptly autofocusing waves. (C) 2011 Optical Society of America

Journal Title

Optics Letters

Volume

36

Issue/Number

10

Publication Date

1-1-2011

Document Type

Article

Language

English

First Page

1890

Last Page

1892

WOS Identifier

WOS:000290716000050

ISSN

0146-9592

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