Open AccessNonlinear refractive index of solids in mid-infrared
Author(s) -
Gauri Patwardhan,
Jared S. Ginsberg,
Cecilia Y. Chen,
Majid Jadidi,
Alexander L. Gaeta
Publication year - 2021
Publication title -
optics letters/optics index
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 , semiconductor , 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.