In recent days, many research articles are being produced with studies on dielectric behavior and the third order nonlinear optical properties of the materials. Can anyone explain what can be the possible relevance of dielectric studies for third order nonlinear optical applications?
Dear Hegde, the query is nice. As you know, dielectric properties are well connected to refractive indices. Apart from this, permittivity is directly related to refractive index. Hence, if we have an understanding about these properties with respect to NLO, we can tune them according to our choice.
As a result, we can find their application in Drug delivery, molecular sensing, luminescence etc.
See the dielectric constant is a measure of polarization that means how much your material could be polarized with respect to applied field. Greater the polarizibility of molecule of your materials greater will be the nonlinear optical performance. you can check my article: "Raman, Photoluminesence and a.c. electrical studies of pure and L-serine doped ammonium dihydrogen phoshphate single crystal" New Journal of Chemistry, Royal Society of Chemistry (2018).
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