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Mid-infrared wavelength conversion using a composite Si3N4-HfO2waveguide device

Saini, TS and Arora, S and Supradeepa, VR (2021) Mid-infrared wavelength conversion using a composite Si3N4-HfO2waveguide device. In: Integrated Optics: Devices, Materials, and Technologies XXV 2021, 6-11 Mar 2021.

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Official URL: https://doi.org/10.1117/12.2582755


We report the design and numerical analysis of a composite HfO2-coated-Si3N4 waveguide pumped with femtosecond laser pulses at 1550 nm for mid-infrared wavelength generation at 4.0 µm. The principle of wavelength conversion is based on the degenerate four-wave-mixing in designed HfO2-coated-Si3N4 waveguide. The waveguide design and the dispersion engineering to get the desired phase matching conditions have been discussed. The advantages of composite Si3N4-HfO2 waveguide over Si3N4 strip waveguide include high damage threshold, better electromagnetic interaction and thus strong light confinement, and relatively longer wavelength conversion in the mid-infrared region. Such on-chip composite Si3N4-HfO2 waveguide generating mid-infrared light at 4.0 µm holds considerable potential for the applications in a wide range of the mid-infrared nonlinear optical devices. © 2021 SPIE.

Item Type: Conference Paper
Publication: Proceedings of SPIE - The International Society for Optical Engineering
Publisher: SPIE
Additional Information: The copyright for this article belongs to SPIE
Keywords: Femtosecond lasers; Four wave mixing; Hafnium oxides; Infrared devices; Integrated optics; Laser pulses; Optical pumping; Phase matching; Silicon; Silicon compounds; Waveguides, Degenerate four wave mixing; Dispersion engineering; Electromagnetic interactions; Light confinements; Mid-infrared regions; Mid-infrared wavelengths; Nonlinear optical devices; Phase matching conditions, Nitrogen compounds
Department/Centre: Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Date Deposited: 05 Aug 2021 06:12
Last Modified: 05 Aug 2021 10:39
URI: http://eprints.iisc.ac.in/id/eprint/69067

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