We experimentally demonstrate an electro-optic Gaussian-to-Bessel beam-converter miniaturized down to a 30 × 30 μm 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.
Di Domenico, G., Parravicini, J., Antonacci, G., Silvestri, S., Agranat, A., J, ., et al. (2017). Miniaturized photogenerated electro-optic axicon lens Gaussian-to-Bessel beam conversion. APPLIED OPTICS, 56(10), 2908-2911 [10.1364/AO.56.002908].
Miniaturized photogenerated electro-optic axicon lens Gaussian-to-Bessel beam conversion
PARRAVICINI, JACOPOSecondo
;
2017
Abstract
We experimentally demonstrate an electro-optic Gaussian-to-Bessel beam-converter miniaturized down to a 30 × 30 μm 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.
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