Abstract

In this study, electrically tunable advanced liquid crystal q-plates (ALCQPs) that combine two q values in one device to generate optical vortex beams were fabricated using a photoalignment method that involves the use of azo dye, a surfactant alignment material. The electrically tunable ALCQP device could be modulated to control the shape and polarization of a circularly polarized Gaussian laser beam that propagated through the device. A Gaussian beam modulated by an ALCQP under suitable applied voltage showed a variation beam shape with helical wavefront, as demonstrated by Michelson’s interference. This helical wavefront beam carries an orbital angular momentum and can be used in an optical tweezers system to trap, move, and rotate particles simultaneously.

© 2013 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Orbital angular momentum: origins, behavior and applications

Alison M. Yao and Miles J. Padgett
Adv. Opt. Photon. 3(2) 161-204 (2011)

Tight focusing of elliptically polarized vortex beams

Baosuan Chen and Jixiong Pu
Appl. Opt. 48(7) 1288-1294 (2009)

Arbitrary and reconfigurable optical vortex generation: a high-efficiency technique using director-varying liquid crystal fork gratings

Peng Chen, Bing-Yan Wei, Wei Ji, Shi-Jun Ge, Wei Hu, Fei Xu, Vladimir Chigrinov, and Yan-Qing Lu
Photon. Res. 3(4) 133-139 (2015)

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 (5)

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 (3)

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

Metrics

You do not have subscription access to this journal. Article level metrics 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