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

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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
Issue number14
StatePublished - 2007

Bibliographical note

Funding Information:
J.W.W. acknowledges the support by Seoul Research and Business Development Program (10816), by ABRL program, and by Korea Research Foundations (KRF-2006-005-J04001), and S.H.S. acknowledges the support by OPERA ERC program.


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