Efficient frequency doubling in lithium niobate waveguides by reverse proton exchange

Annarita Di Lallo; Claudio Conti; Alfonso C. Cino; Gaetano Assanto

doi:10.1117/12.424636

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1 May 2001 Efficient frequency doubling in lithium niobate waveguides by reverse proton exchange

Annarita Di Lallo, Claudio Conti, Alfonso C. Cino, Gaetano Assanto

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Proceedings Volume 4268, Growth, Fabrication, Devices, and Applications of Laser and Nonlinear Materials; (2001) https://doi.org/10.1117/12.424636
Event: Photonics West 2001 - LASE, 2001, San Jose, CA, United States

Abstract

We numerically investigate efficient frequency doubling of near infrared light in a coupled system of buried and surface waveguides obtained by Reverse Proton Exchange in z-cut Lithium Niobate. For a monomode TE surface guide at 1.32 micrometer and a highly multimode TM (buried) guide at 666 nm and exploiting the d₃₁ nonlinear tensor element, for planar structures we calculated conversion efficiencies as high as 14% micrometer/W cm, with a weak dependence on temperature. Noticeably, this geometry features the physical separation of the harmonics at the output.

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Annarita Di Lallo, Claudio Conti, Alfonso C. Cino, and Gaetano Assanto "Efficient frequency doubling in lithium niobate waveguides by reverse proton exchange", Proc. SPIE 4268, Growth, Fabrication, Devices, and Applications of Laser and Nonlinear Materials, (1 May 2001); https://doi.org/10.1117/12.424636

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