Mid-infrared wavelength conversion using a composite Si3N4-HfO2 waveguide device

Than Singh Saini; Shilpi Arora; V. R. Supradeepa

doi:10.1117/12.2582755

5 March 2021 Mid-infrared wavelength conversion using a composite Si₃N₄-HfO₂ waveguide device

Than Singh Saini, Shilpi Arora, V. R. Supradeepa

Proceedings Volume 11689, Integrated Optics: Devices, Materials, and Technologies XXV; 116891T (2021) https://doi.org/10.1117/12.2582755
Event: SPIE OPTO, 2021, Online Only

Conference Poster

Abstract

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.

Conference Presentation

Citation Download Citation

Than Singh Saini, Shilpi Arora, and V. R. Supradeepa "Mid-infrared wavelength conversion using a composite Si₃N₄-HfO₂ waveguide device", Proc. SPIE 11689, Integrated Optics: Devices, Materials, and Technologies XXV, 116891T (5 March 2021); https://doi.org/10.1117/12.2582755

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