Electro-optic vortex-producing lenses using spiral-shaped ferroelectric domains.
We present electrically controlled wavefront modulators that simultaneously focus and introduce vorticity to an incident beam. These modulators are made out of spiral-shaped 180 degrees ferroelectric domains in lithium niobate; they have a virtually instantaneous response time, withstand high power and can be used throughout the transparency region of the material (0.4 - 5 microm).
Cudney
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División de Física Aplicada, Centro de Investigación Científica y de Educación Superior de Ensenada, Apdo. Postal 2732, Ensenada, B.C, C.P. 22860, Mexico. rcudney@cicese.mx
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