Open AccessVector beam bending via a polarization gradient
Author(s) -
Jonathan M. Nichols,
Daniel Nickel,
F. Bucholtz
Publication year - 2022
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.467678
Subject(s) - optics , polarization (electrochemistry) , centroid , physics , radial polarization , transverse plane , beam (structure) , light beam , linear polarization , spatial light modulator , laser beam quality , laser beams , geometry , mathematics , laser , chemistry , structural engineering , engineering
We propose, analyze and demonstrate experimentally an entirely new optical effect in which the centroid of a coherent optical beam can be designed to propagate along a curved trajectory in free space by tailoring the spatial distribution of linear polarization across the transverse beam profile. Specifically, a non-zero spatial gradient of second order or higher in the linear state of polarization is shown to cause the beam centroid to "accelerate" in the direction transverse to the direction of propagation. The effect is confirmed experimentally using spatial light modulation to create the distribution in linear polarization and then measuring the transverse location of the beam profile at varying propagation distances. The observed displacement of the beam centroid is shown to closely match the theory out to 34m propagation distance.