Holographic inscription of helical wavefronts in a liquid crystal polarization grating

Hyunhee Choi, J. H. Woo, J. W. Wu, Dong Wook Kim, Tong Kun Lim, Seok Ho Song

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

A space-varying polarization hologram (PH) grating is fabricated in a nematic liquid crystal (LC) cell with azo-side-chain polymer alignment layers. The polarization-sensitive photoisomerization property of azo-side-chain polymer is utilized to inscribe the PH in a LC cell. Both transmission and reflection holographic configurations are adopted in fabrication. The transmission PH made by the circular orthogonal polarizations exhibits the polarization-controlled Laguerre-Gaussian beam generation, while the reflection PH made by the linear orthogonal polarizations generates a variety of Laguerre-Gaussian beam, though not polarization controlled.

Original languageEnglish
Article number141112
JournalApplied Physics Letters
Volume91
Issue number14
DOIs
StatePublished - 2007

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