Autofocusing self-imaging: symmetric Pearcey Talbot-like effect

Abstract

The Talbot-like effect of symmetric Pearcey beams (SPBs) is presented numerically and experimentally in the free space. Owing to the Talbot-like effect, the SPBs have the property of periodic, multiple autofocusing and self-healing. Meanwhile, the focusing positions and focusing times of SPBs are controlled by the beam shift factor and the distribution factors. Furthermore, the beam shift factor can also affect the Talbot-like effect and the Talbot period. It is believed that the results can diversify the application of the Talbot effect.

Controlling self-healing of optical field based on moiré dual-microlens arrays

“…However, the moiré lattice wavefields are also non-diffracting beams, and the self-healing distance is independent of the twist angle. In addition, the generation of complicated design of optical fields highly depends on the expensive phase modulation devices such as spatial light modulators (SLMs) or digital micromirror devices (DMDs) in experiments [41,42]. These devices always limit the application of self-healing beams in intense or multiple-color laser fields.…”

“…These devices always limit the application of self-healing beams in intense or multiple-color laser fields. Recently, Zhao et al combined Talbot effect with a non-diffracting beam, giving the beam the self-heal ability in laser transmission [41]. Unfortunately, the optical field passing through a single Talbot optical element with diffraction effects fails to reconstruct itself well according to the previous investigation [43].…”

Generation and Talbot Effect of Optical Vortex Lattices with High Orbital Angular Momenta

“…The Talbot effect is a near‐field diffraction and interference phenomenon. [ 48,49 ] When an OVL passes through a periodic structure, its image can be reproduced at regular distances, which are integer multiples of the Talbot length. Hence, we investigated the Talbot effect of HO‐OVLs.…”