Holographic inscription of helical wavefronts in a liquid crystal polarization grating
- Authors
- Choi, Hyunhee; Woo, Jae heun; Wu, Jeong Weon; Kim, Dong-Wook; Lim, Tong-Kun; Song, Seok Ho
- Issue Date
- Oct-2007
- Publisher
- AMER INST PHYSICS
- Citation
- APPLIED PHYSICS LETTERS, v.91, no.14, pp.1 - 4
- Indexed
- SCIE
SCOPUS
- Journal Title
- APPLIED PHYSICS LETTERS
- Volume
- 91
- Number
- 14
- Start Page
- 1
- End Page
- 4
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/172229
- DOI
- 10.1063/1.2793173
- ISSN
- 0003-6951
- 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.
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