# this file is part of refractiveindex.info database
# refractiveindex.info database is in the public domain
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REFERENCES: "K. Luke, Y. Okawachi, M. R. E. Lamont, A. L. Gaeta, M. Lipson. Broadband mid-infrared frequency comb generation in a Si<sub>3</sub>N<sub>4</sub> microresonator, <a href=\"https://doi.org/10.1364/OL.40.004823\"><i>Opt. Lett.</i> <b>40</b>, 4823-4826 (2015)</a>"
COMMENTS: "340 nm Si<sub>3</sub>N<sub>4</sub> on 3.1 μm of thermal SiO<sub>2</sub> on silicon."
DATA:
  - type: formula 1
    range: 0.310 5.504
    coefficients: 0 3.0249 0.1353406 40314 1239.842
