Nonlinearity modulated structure in a type-II lithium niobate waveguide by femtosecond laser direct writing

Tingge Yuan; Xiongshuo Yan; Bing Zhu; Yuping Chen; Xianfeng Chen

doi:10.1364/CLEO_AT.2021.ATh2R.5

Conference on Lasers and Electro-Optics
OSA Technical Digest (Optica Publishing Group, 2021),
paper ATh2R.5
•https://doi.org/10.1364/CLEO_AT.2021.ATh2R.5

Nonlinearity modulated structure in a type-II lithium niobate waveguide by femtosecond laser direct writing

Tingge Yuan, Xiongshuo Yan, Bing Zhu, Yuping Chen, and Xianfeng Chen

CLEO: Applications and Technology 2021

San Jose, California United States
9–14 May 2021
ISBN: 978-1-943580-91-0

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Ultrafast Laser-based Welding and Waveguide Writing (ATh2R)

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T. Yuan, X. Yan, B. Zhu, Y. Chen, and X. Chen, "Nonlinearity modulated structure in a type-II lithium niobate waveguide by femtosecond laser direct writing," in Conference on Lasers and Electro-Optics, J. Kang, S. Tomasulo, I. Ilev, D. Müller, N. Litchinitser, S. Polyakov, V. Podolskiy, J. Nunn, C. Dorrer, T. Fortier, Q. Gan, and C. Saraceno, eds., OSA Technical Digest (Optica Publishing Group, 2021), paper ATh2R.5.

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Abstract

A type-II quasi phase matched waveguide was fabricated by femtosecond laser in z-cut lithium niobate. The normalized conversion efficiency of 99.1%W⁻¹cm⁻² is obtained, corresponding to a nonlinearity modulation depth of 0.34.

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