Tuneable multi-order liquid crystal vortex beam generators

Camron Nourshargh; Alec Xu; Patrick S. Salter; Chao He; Martin J. Booth; Steve J. Elston; Stephen M. Morris

doi:10.1117/12.3002530

13 March 2024 Tuneable multi-order liquid crystal vortex beam generators

Camron Nourshargh, Alec Xu, Patrick S. Salter, Chao He, Martin J. Booth, Steve J. Elston, Stephen M. Morris

Proceedings Volume PC12907, Emerging Liquid Crystal Technologies XIX; PC129070O (2024) https://doi.org/10.1117/12.3002530
Event: SPIE OPTO, 2024, San Francisco, California, United States

Abstract

We present a liquid crystal (LC) optical vortex (OV) beam generator that is tuneable in both wavelength and orbital angular momentum state. Two-photon polymerization direct laser writing is used to structure the director profile of a polymerizable LC in 3-dimensions to form a helicoidal phase plate. Here, we demonstrate an OV beam generator that can be electrically tuned to produce any integer or fractional OV from zero to second order, for incident wavelengths in the range 490 nm and 780 nm. A range of techniques are employed to characterize and verify the OV beam generation at different voltages.

Conference Presentation

Citation Download Citation

Camron Nourshargh, Alec Xu, Patrick S. Salter, Chao He, Martin J. Booth, Steve J. Elston, and Stephen M. Morris "Tuneable multi-order liquid crystal vortex beam generators", Proc. SPIE PC12907, Emerging Liquid Crystal Technologies XIX, PC129070O (13 March 2024); https://doi.org/10.1117/12.3002530

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