Nonlinear refractive index of solids in mid-infrared | Zendy

Gauri Patwardhan | Zendy; Jared S. Ginsberg | Zendy; Cecilia Y. Chen | Zendy; Mohsen Jadidi | Zendy; Alexander L. Gaeta | Zendy

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Nonlinear refractive index of solids in mid-infrared

Author(s) -

Gauri Patwardhan,

Jared S. Ginsberg,

Cecilia Y. Chen,

Mohsen Jadidi,

Alexander L. Gaeta

Publication year - 2021

Publication title -

optics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.524

H-Index - 272

eISSN - 1071-2763

pISSN - 0146-9592

DOI - 10.1364/ol.421469

Subject(s) - magnesium fluoride , refractive index , materials science , dielectric , zinc selenide , dispersion (optics) , optics , infrared , cadmium selenide , analytical chemistry (journal) , optoelectronics , magnesium , physics , chemistry , chromatography , quantum dot , metallurgy

We measure the third-order nonlinear optical response of various dielectrics and semiconductors using the spectrally resolved two-beam coupling method at 2.3 µm, 3.5 µm, 4.5 µm, and 8.3 µm. These materials include fused silica, sapphire, calcium fluoride, magnesium fluoride, zinc sulphide, and zinc selenide. We compare our results with previous literature results and theoretically expected values using two-band model theory. The dispersion of the nonlinear refractive index n 2 over this wavelength range is found to be negligible.

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