Dispersion-optimized multicladding silicon nitride waveguides for nonlinear frequency generation from ultraviolet to mid-infrared
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Dispersion-optimized multicladding silicon nitride waveguides for nonlinear frequency generation from ultraviolet to mid-infrared

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Dispersion-optimized multicladding silicon nitride waveguides for nonlinear frequency generation from ultraviolet to mid-infrared

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Chávez Boggio, J.M.; Ortega Moñux, A.; Modotto, D.; Fremberg, T.; Bodenmüller, D.; Giannone, D.; Roth, M.M.; Hansson, T.; Wabnitz, S.; Silvestre Mora, Enrique; Zimmermann, L.
This document is a artículoDate2016
Nonlinear frequency conversion spanning from the ultraviolet to the mid-infrared (beyond 2.4 μm) is experimentally demonstrated in multicladding silicon nitride (𝑆𝑖𝑋𝑁𝑌) waveguides. By adjusting the waveguide cross-section the chromatic dispersion is flattened, which enhances both the efficiency and the bandwidth of the nonlinear conversion. How accurately the dispersion is tailored is assessed through chromatic dispersion measurements and an experiment/simulation comparison of the dispersive waves' wavelength locations. Undesirable fluctuations of both the refractive index and the dimensions of the waveguide during the fabrication process result in a dispersion unpredictability of at least 20 ps/nm/km. Finally, manipulation of the effective refractive index allows for multiple third harmonic generated tones spanning from 381 to 715 nm.

    Chávez Boggio, J.M. Ortega Moñux, A. Modotto, D. Fremberg, T. Bodenmüller, D. Giannone, D. Roth, M.M. Hansson, T. Wabnitz, S. Silvestre Mora, Enrique Zimmermann, L. 2016 Dispersion-optimized multicladding silicon nitride waveguides for nonlinear frequency generation from ultraviolet to mid-infrared Journal of the Optical Society of America B-Optical Physics 33 11 2402 2413
https://doi.org/10.1364/JOSAB.33.002402

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