Abstract

We demonstrated by means of interferometry that optical vortices can be generated by diffraction of a laser beam from a birefringent nematic liquid crystal that spontaneously creates a periodic array of electro-convective domains and edge dislocations under an applied electric field. The diffracted beam of order m produced by an elementary dislocation comprises a number |m| of distinct optical vortices, each with unit topological charge. Birefringent liquid crystal arrays provide a fast, convenient, and promising way of generating and studying optical vortices. The used materials are inexpensive, fabrication processes are simple, and both input polarization and applied field can be used as external controls to switch the optical vortices on and off.

© 2018 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Optical vortices generated by dislocations in a cholesteric liquid crystal

D. Voloschenko and O. D. Lavrentovich
Opt. Lett. 25(5) 317-319 (2000)

Fast switchable optical vortex generator based on blue phase liquid crystal fork grating

Shi-Jun Ge, Wei Ji, Guo-Xin Cui, Bing-Yan Wei, Wei Hu, and Yan-Qing Lu
Opt. Mater. Express 4(12) 2535-2541 (2014)

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 (4)

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