Share Email Print

Proceedings Paper

Design methods for diffractive waveplate geometric phase elements
Author(s): Gary F. Walsh
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

Geometric phase diffractive optics technology is rapidly advancing including patterned liquid crystal and polymer liquid crystal elements and devices. The need exists for a set of design methods and tools to engineer optical components and systems. Numerical and analytical design methods are discussed with an emphasis on optical systems. Multilevel simulation methods are used incorporating full numerical electromagnetic solutions, diffraction theory, and ray tracing. Additionally, iterative algorithms are used to design the local anisotropic axis orientation of various regions in order to produce the desired diffraction effects. Elements are optimized for both amplitude and phase. Examples are presented including an optical system based on geometric phase elements that sorts the orbital and spin angular momentum states of an optical beam. Designs are demonstrated in polymer liquid crystal diffractive waveplate thin film elements fabricated through photo-alignment with a spatial light polarization modulator. The array of numerical design technique presented allow the rapid design of optical phase patterns, integration with real optical systems, and evaluation of physical materials and device properties.

Paper Details

Date Published: 1 March 2019
PDF: 10 pages
Proc. SPIE 10941, Emerging Liquid Crystal Technologies XIV, 109410R (1 March 2019); doi: 10.1117/12.2510061
Show Author Affiliations
Gary F. Walsh, U.S. Army NRSDEC (United States)

Published in SPIE Proceedings Vol. 10941:
Emerging Liquid Crystal Technologies XIV
Liang-Chy Chien; Dirk J. Broer; Igor Muševič; Byoungho Lee, Editor(s)

© SPIE. Terms of Use
Back to Top
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?