Highly efficient and polarization-independent Fresnel lens based on dye-doped liquid crystal | Zendy

L. Y. Lin | Zendy; HungChang Jau | Zendy; TsungHsien Lin | Zendy; Andy Y.G. Fuh | Zendy

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Highly efficient and polarization-independent Fresnel lens based on dye-doped liquid crystal

Author(s) -

L. Y. Lin,

HungChang Jau,

TsungHsien Lin,

Andy Y.G. Fuh

Publication year - 2007

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.15.002900

Subject(s) - optics , materials science , fresnel lens , polarization (electrochemistry) , liquid crystal , diffraction efficiency , fresnel number , fresnel equations , lens (geology) , doping , optoelectronics , diffraction , refractive index , physics , chemistry

We demonstrated a highly efficient, polarization-independent and electrically tunable Fresnel lens based on dye-doped liquid crystal using double-side photoalignment technique. The maximum diffraction efficiency reaches 37%, which approaches the theoretical limit ~41%. Such a lens functions as a half-wave plate, and this feature could be well preserved under the applied voltage. In addition, the device is simple to fabricate, and has fast switching responses between focusing and defocusing state.

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