Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Experimental demonstration of square Fresnel zone plate with chiral side lobes

Not Accessible

Your library or personal account may give you access

Abstract

In this study, we introduce what we believe is a novel holographic optical element called a chiral square Fresnel zone plate (CSFZP). The chirality is imposed on a square Fresnel zone plate (SFZP) using a nonclassical technique by rotating the half-period zones relative to one another. The rotation of the half-period zones, in turn, twists the side lobes of the diffraction pattern without altering the focusing properties inherent to a SFZP. As a consequence, the beam profile is hybrid, consisting of a strong central Gaussian focal spot with gradient force similar to that generated by a lens and twisted side lobes with orbital angular momentum. The optical fields at the focal plane were calculated and found to possess a whirlpool-phase profile and a twisted intensity profile. Analysis of the field variation along the direction of propagation revealed a spiraling phase and amplitude distribution. Poynting vector plot of the fields revealed the presence of angular momentum in the regions of chiral side lobes. The phase of the CSFZPs were displayed on a phase-only reflective spatial light modulator and illuminated using a laser. The intensity patterns recorded in the experiment match the calculated ones, with a strong central focal spot and twisted side lobes. The beam pattern was implemented in an optical trapping experiment and was found to possess particle trapping capabilities.

© 2017 Optical Society of America

Full Article  |  PDF Article
More Like This
Spirally rotating particles with structured beams generated by phase-shifted zone plates

Jila Rafighdoost, Xing Li, Yuan Zhou, Meiling Zhou, Manman Li, Shaohui Yan, and Baoli Yao
Appl. Opt. 61(5) 1268-1274 (2022)

Design, fabrication, and evaluation of a multilevel spiral-phase Fresnel zone plate for optical trapping

A. Vijayakumar and Shanti Bhattacharya
Appl. Opt. 51(25) 6038-6044 (2012)

Dual-type fractal spiral zone plate for generating sequence of square optical vortices

Jinghan Yang, Yinghui Zhong, Chenglong Zheng, Shuangling Ding, Huaping Zang, Erjun Liang, and Leifeng Cao
J. Opt. Soc. Am. A 36(5) 893-897 (2019)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Supplementary Material (3)

NameDescription
Visualization 1: MP4 (4120 KB)      Variation of the intensity profile for K=4 degrees
Visualization 2: MP4 (4988 KB)      Variation of the phase profile for K=4 degrees
Visualization 3: MP4 (11174 KB)      Optical trapping

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (9)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Metrics

Select as filters


Select Topics Cancel
© Copyright 2022 | Optica Publishing Group. All Rights Reserved