18 November 2008 Dark spatial photovoltaic solitons and soliton-induced waveguide elements in ion-implanted planar lithium niobate waveguides
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Proceedings Volume 7138, Photonics, Devices, and Systems IV; 71381M (2008) https://doi.org/10.1117/12.818044
Event: Photonics, Devices, and Systems IV, 2008, Prague, Czech Republic
Abstract
Formation of dark spatial optical solitons in planar waveguides produced by implantation of light ions into Fe- or Cudoped X cut lithium niobate wafers is experimentally studied. The implantation both of protons and O3+-ions results in the excellent waveguide layers with their thickness about 3 microns and optical losses less than 1 dB/cm. The soliton states at light wavelengths of 532 nm and 633 nm are developed due to the self-defocusing photorefractive-photovoltaic nonlinearity of lithium niobate. Extraordinarily polarized light beams are used in experiments to form dark solitons and to probe the soliton-induced waveguide channels. Steady-state dark photovoltaic spatial solitons have been realized in both, H+- implanted and O3+ - implanted planar waveguides at optical powers from 10 to 100 microwatts. The storage time of soliton-induced channel waveguides makes up at least some hours without special illumination of a planar waveguide and they may be erased within some seconds in a case of their permanent readout with stronger light beams. The possibility to form more complicated channel waveguide structures in regimes of dark spatial solitons is also demonstrated.
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Vitaly G. Kruglov, Vitaly G. Kruglov, Vladimir M. Shandarov, Vladimir M. Shandarov, Yang Tan, Yang Tan, Feng Chen, Feng Chen, Detlef Kip, Detlef Kip, } "Dark spatial photovoltaic solitons and soliton-induced waveguide elements in ion-implanted planar lithium niobate waveguides", Proc. SPIE 7138, Photonics, Devices, and Systems IV, 71381M (18 November 2008); doi: 10.1117/12.818044; https://doi.org/10.1117/12.818044
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