Abstract

Q-plates are geometrical phase elements that enable the realization of vector beams in simple and compact optical setups. In this work, we consider a tunable liquid-crystal commercial q-plate operative in the visible and near-IR range and study its spectral and color birefringence properties under broadband illumination. We first characterize the spectral retardance function of the device in a wide range from 400 to 1600 nm and determine how it changes upon applied voltage. Then we evaluate the color transmission characteristics when inserting the q-plate between crossed and parallel linear polarizers. These color properties agree with the trajectory in the CIExy chromaticity diagram as the applied voltage changes. Finally, we demonstrate that a simple visual inspection of the transmitted birefringence color perceived when placing the q-plate between crossed polarizers can be used to obtain a rapid estimation of the q-plate retardance at given wavelength ranges.

© 2019 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Achromatic linear retarder with tunable retardance

Abdelghafour Messaadi, María M. Sánchez-López, Asticio Vargas, Pascuala García-Martínez, and Ignacio Moreno
Opt. Lett. 43(14) 3277-3280 (2018)

Analysis of a segmented q-plate tunable retarder for the generation of first-order vector beams

Jeffrey A. Davis, Nobuyuki Hashimoto, Makoto Kurihara, Enrique Hurtado, Melanie Pierce, María M. Sánchez-López, Katherine Badham, and Ignacio Moreno
Appl. Opt. 54(32) 9583-9590 (2015)

Liquid-crystal-based switchable polarizers for sensor protection

Chiung-Sheng Wu and Shin-Tson Wu
Appl. Opt. 34(31) 7221-7227 (1995)

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 OSA member, or as an authorized user of your institution.

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

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 OSA member, or as an authorized user of your institution.

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

Figures (6)

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

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

Equations (19)

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

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