Abstract

We report the observation of optical vortices in a laser beam propagating through the stripe pattern of a cholesteric liquid crystal. The liquid crystal is confined in a cell with homogeneous boundary conditions and forms a diffraction phase grating. Optical vortices are produced by edge dislocations of the cholesteric grating. The vortices show up as spots of zero light intensity in the diffraction maxima. There is one spot in each +1 and -1 diffraction maximum and two spots in diffraction maxima +2 and -2.

© 2000 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Switchable two-dimensional gratings based on field-induced layer undulations in cholesteric liquid crystals

B. I. Senyuk, I. I. Smalyukh, and O. D. Lavrentovich
Opt. Lett. 30(4) 349-351 (2005)

Interlaced cholesteric liquid crystal fingerprint textures via sequential UV-induced polymer-stabilization

Wen-Song Li, Ling-Ling Ma, Ling-Li Gong, Sen-Sen Li, Can Yang, Bin Luo, Wei Hu, and Lu-Jian Chen
Opt. Mater. Express 6(1) 19-28 (2016)

Optical diffraction in nonuniform cholesteric liquid crystals: phase-grating mode

M. S. Giridhar, K. A. Suresh, and G. S. Ranganath
J. Opt. Soc. Am. A 19(1) 19-23 (2002)

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

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