Fabrication and characterization of waveguides in LiNbO3 written with femtosecond laser pulses

Hongyun Chen

doi:10.1117/12.869030

21 July 2010 Fabrication and characterization of waveguides in LiNbO₃ written with femtosecond laser pulses

Hongyun Chen

Proceedings Volume 7749, 2010 International Conference on Display and Photonics; 77490U (2010) https://doi.org/10.1117/12.869030
Event: 2010 International Conference on Display and Photonics, 2010, Nanjing, China

Abstract

The fabrication of waveguides inside transparent media using ultrashort laser pulses has gained a lot of interest during the past years. When femtosecond laser pulses are focused inside the bulk of transparent materials, the refractive-index change can be induced around the focal volume. In this paper, we demonstrate that embedded waveguides are fabricated from a computer-aided design file by scanning the focus spot in z-cut lithium niobate (LiNbO₃) using femtosecond laser pulses. The beam coupling in such waveguides is experimentally investigated. The coupling constant of the waveguide structure is obtained by measuring the ratio of output power of each waveguide.

Citation Download Citation

Hongyun Chen "Fabrication and characterization of waveguides in LiNbO₃ written with femtosecond laser pulses", Proc. SPIE 7749, 2010 International Conference on Display and Photonics, 77490U (21 July 2010); https://doi.org/10.1117/12.869030

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