Title

Pre-Engineered Abruptly Autofocusing Beams

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. © 2011 Optical Society of America.

Publication Date

5-15-2011

Publication Title

Optics Letters

Volume

36

Issue

10

Number of Pages

1890-1892

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1364/OL.36.001890

Socpus ID

79956301118 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/79956301118

This document is currently not available here.

Share

COinS