We experimentally demonstrate an electro-optic Gaussian-to-Bessel beam-converter miniaturized down to a 30 × 30 ?m pixel in a potassium-lithium-tantalate-niobate (KLTN) paraelectric crystal. The converter is based on the electro-optic activation of a photoinduced and reconfigurable volume axicon lens achieved using a prewritten photorefractive funnel space-charge distribution. The transmitted light beam has a tunable depth of field that can be more than twice that of a conventional beam with the added feature of being self-healing.
Miniaturized photogenerated electro-optic axicon lens Gaussian-to-Bessel beam conversion
2017
Abstract
We experimentally demonstrate an electro-optic Gaussian-to-Bessel beam-converter miniaturized down to a 30 × 30 ?m pixel in a potassium-lithium-tantalate-niobate (KLTN) paraelectric crystal. The converter is based on the electro-optic activation of a photoinduced and reconfigurable volume axicon lens achieved using a prewritten photorefractive funnel space-charge distribution. The transmitted light beam has a tunable depth of field that can be more than twice that of a conventional beam with the added feature of being self-healing.File in questo prodotto:
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