Terahertz pulses from titanium-doped lithium niobate strip optical waveguides using a 1.55-micrometer pump beam

Joselito E. Muldera; Jessica Pauline C. Afalla; Takashi Furuya; Hideaki Kitahara; Elmer S. Estacio; Katsuhiko Saito; Qixin Guo; Masahiko Tani

doi:10.1117/12.2601151

9 October 2021 Terahertz pulses from titanium-doped lithium niobate strip optical waveguides using a 1.55-micrometer pump beam

Joselito E. Muldera, Jessica Pauline C. Afalla, Takashi Furuya, Hideaki Kitahara, Elmer S. Estacio, Katsuhiko Saito, Qixin Guo, Masahiko Tani

Author Affiliations +

Proceedings Volume 11906, Infrared, Millimeter-Wave, and Terahertz Technologies VIII; 119061O (2021) https://doi.org/10.1117/12.2601151
Event: SPIE/COS Photonics Asia, 2021, Nantong, JS, China

Conference Poster

Abstract

We demonstrate that titanium-doped lithium niobate strip optical waveguides can act as terahertz emitters. Terahertz pulses were produced by pumping with a femtosecond laser at a wavelength of 1.55 μm via the prism-coupled Cherenkov-phase matching scheme. Near-single cycle time-domain pulses were generated and the terahertz time-domain peak signal from the 40-μm waveguide was found to be ~18% higher than that observed with bulk crystal. The THz power spectra revealed a broad bandwidth and high signal-to-noise ratio. These findings signify the feasibility of titanium-in-diffusion to produce strong terahertz radiation from titanium-doped lithium niobate waveguides.

Citation Download Citation

Joselito E. Muldera, Jessica Pauline C. Afalla, Takashi Furuya, Hideaki Kitahara, Elmer S. Estacio, Katsuhiko Saito, Qixin Guo, and Masahiko Tani "Terahertz pulses from titanium-doped lithium niobate strip optical waveguides using a 1.55-micrometer pump beam", Proc. SPIE 11906, Infrared, Millimeter-Wave, and Terahertz Technologies VIII, 119061O (9 October 2021); https://doi.org/10.1117/12.2601151

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