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. 2025 Mar 8.
doi: 10.1007/s10895-025-04235-9. Online ahead of print.

Study of DFT, Synthesis, and Nonlinear Optical Properties of a Schiff Base Compound

Ghufran A Mirdan  1 , Qusay M A Hassan  2 , Mouayed Y Kadhum  3 , C A Emshary  4 , Kawkab Ali Hussein  3 , H A Sultan  4 , Sadiq M H Ismael  3 , Hasanain A Abdullmajed  1
Affiliations

Study of DFT, Synthesis, and Nonlinear Optical Properties of a Schiff Base Compound

Ghufran A Mirdan et al. J Fluoresc. .

Abstract

A Schiff base (LS2) compound is synthesized via a reaction of a hot ethanolic solution of (3-ethoxy salcyaldehyde) and a hot ethanolic solution of amine(methyl-4-amino benzoate). The LS2 compound is characterized via 1H and 13C NMR spectra, Mass spectrum, and FT-IR spectrum. We observed multiple diffraction patterns of a cw 473 nm laser beam from the LS2 compound caused by spatial self-phase modulation (SSPM). The nonlinear refractive index (NLRI) of the LS2 compound is estimated at the high-power input of the laser beam and found equals to 5.387 × 10-7 cm2/W. The Z-scan techniques are used to estimate the NLRI and found equals to 0.12 × 10-7 cm2/W. The all-optical switching (AOS) effect can be seen when 473 nm is used as the controlling beam and 532 nm is used as the controlled beam.

Keywords: Diffraction patterns; Schiff base compound; Z-scan.

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Conflict of interest statement

Declarations. Ethics Approval and Consent to Participate: The authors declare that their commitment to ethics related to his work and they have designed the experiments, collected and analyzed the data, and written the manuscript. Consent for Publication: The authors declare their consent of publication. Competing Interests: The authors declare no competing interests.

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