Abstract
In this article, we report an experimental investigation on second and third-order nonlinear optical (NLO) properties of an efficient chalcone material 1-(5-methyl furan-2-yl)-3-(4-nitrophenyl) prop-2-en-1-one (MFNP) along with other characterization techniques. The synthesized material is confirmed through FT-IR and FT-Raman spectroscopic techniques. Single-crystal XRD study showed that the crystal belongs to the triclinic crystal system crystallizing in the P1 space group which is a non-centrosymmetric crystal form. From UV-VIS-NIR spectroscopy, the crystals were found to possess less absorbent in the visible region. Furthermore, the crystal exhibits excellent thermal stability up to 136 °C. The intermolecular interactions in the crystal were identified by obtaining the Hirshfeld surface and the related 2D finger plots. The second harmonic generation (SHG) efficiency of MFNP is three times the standard KDP crystals. Using a continuous-wave laser beam z scan experiment was performed and the “nonlinear refractive index (n2)”, “third-order nonlinear absorption coefficient (β)” and “second-order molecular hyperpolarizability(γh)” were calculated for MFNP. The estimated threshold value for optical limiting was found to be 1.85 kJ/cm2. The excellent experimental results show that MFNP is a very useful material especially in the field of optical power limiting applications.
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