Third-harmonic generation in slow-light chalcogenide glass photonic crystal waveguides |
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Authors: | Monat Christelle Spurny Marcel Grillet Christian O'Faolain Liam Krauss Thomas F Eggleton Benjamin J Bulla Douglas Madden Steve Luther-Davies Barry |
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Institution: | Centre for Ultrahigh bandwidth Devices for Optical Systems (CUDOS), Institute of Photonics and Optical Science (IPOS), School of Physics, University of Sydney, New South Wales 2006, Australia. christelle.monat@ec‐lyon.fr |
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Abstract: | We demonstrate third-harmonic generation (THG) in a dispersion-engineered slow-light photonic crystal waveguide fabricated in AMTIR-1 chalcogenide glass. Owing to the relatively low loss and low dispersion in the slow-light (c/30) regime, combined with the high nonlinear figure of merit of the material (~2), we obtain a relatively large conversion efficiency (1.4×10(-8)/W(2)), which is 30× higher than in comparable silicon waveguides, and observe a uniform visible light pattern along the waveguide. These results widen the number of applications underpinned by THG in slow-light platforms, such as the direct observation of the spatial evolution of the propagating mode. |
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