Electrically controlled Fresnel zone plates made from ring-shaped 180° domains | Zendy

R. S. Cudney | Zendy; L. A. Ríos | Zendy; H. M. Escamilla | Zendy

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Electrically controlled Fresnel zone plates made from ring-shaped 180° domains

Author(s) -

R. S. Cudney,

L. A. Ríos,

H. M. Escamilla

Publication year - 2004

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/opex.12.005783

Subject(s) - optics , zone plate , fresnel zone , materials science , lithium niobate , fresnel number , wafer , ferroelectricity , fresnel equations , refractive index , optoelectronics , physics , diffraction , dielectric

We present high efficiency, low noise electrically-controlled Fresnel phase zone plates that were made by creating ring-shaped 180 degrees ferroelectric domains in a lithium niobate wafer. The primary focal lengths of these lenses ranged from 5 to 43 cm, and the light-gathering efficiency was over 37%, very close to the maximum theoretical value of 40.5%.

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