Field at sharp focusing of shifted single-ring Laguerre–Gauss modes with circular polarization

A. V. Ustinov; S. N. Khonina; I. Golub

doi:10.1117/12.2680710

4 October 2023 Field at sharp focusing of shifted single-ring Laguerre–Gauss modes with circular polarization

A. V. Ustinov, S. N. Khonina, I. Golub

Proceedings Volume 12743, Optical Technologies for Telecommunications 2022; 1274306 (2023) https://doi.org/10.1117/12.2680710
Event: Optical Technologies for Telecommunications 2022, 2022, Ufa, Russian Federation

Abstract

The report presents a theoretical and numerical analysis of the sharp focusing of a displaced Laguerre-Gauss single-ring mode with circular polarization based on the Richards-Wolf formulas. Expressions for the amplitude of the field components in the focal plane are obtained, while the case of “+”-polarization is considered in more detail. In addition to the general expression, the formula for intensity along the horizontal axis is given separately. It is more convenient for determining the displacement parameters than tracking them from the intensity pattern. Expressions are given for calculating the displacement value based on the intensity profile of the longitudinal component for large values of the vortex order. It is shown that for explicit asymmetry visualization it is advisable to use modes with a small but non-zero number.

Citation Download Citation

A. V. Ustinov, S. N. Khonina, and I. Golub "Field at sharp focusing of shifted single-ring Laguerre–Gauss modes with circular polarization", Proc. SPIE 12743, Optical Technologies for Telecommunications 2022, 1274306 (4 October 2023); https://doi.org/10.1117/12.2680710

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available