We demonstrate tunable electro-optic guiding, shaping, and switching of beams in the near infrared spectrum (λ ≃ 980 nm), typical of VCSEL technology, using biomimetic 3D funnel waveguides miniaturized into a sample of potassium-lithium-tantalate-niobate. The switchable waveguides are written using the slow photorefractive build-up of a 3D volume space-charge field caused by a diffracting continuous wave low intensity λ = 532 nm beam, and electro-optic functionality is supported by the quadratic electro-optic effect of the high-symmetry paraelectric phase.
Miniaturized electro-optic infrared beam-manipulator based on 3D photorefractive funnels / Parravicini J.; Mei F.Di.; Pierangeli D.; Agranat A.J.; DelRe E.. - In: JOURNAL OF OPTICS. - ISSN 2040-8978. - ELETTRONICO. - 17:(2015), pp. 055501.1-055501.5. [10.1088/2040-8978/17/5/055501]
Miniaturized electro-optic infrared beam-manipulator based on 3D photorefractive funnels
Parravicini J.;
2015
Abstract
We demonstrate tunable electro-optic guiding, shaping, and switching of beams in the near infrared spectrum (λ ≃ 980 nm), typical of VCSEL technology, using biomimetic 3D funnel waveguides miniaturized into a sample of potassium-lithium-tantalate-niobate. The switchable waveguides are written using the slow photorefractive build-up of a 3D volume space-charge field caused by a diffracting continuous wave low intensity λ = 532 nm beam, and electro-optic functionality is supported by the quadratic electro-optic effect of the high-symmetry paraelectric phase.
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