Curcumin Analogue Spectral, Nonlinear Optical Properties and All-optical Switching Using Visible, Low Power Cw Laser...

Area of Science:

• Materials Science
• Optics and Photonics
• Organic Chemistry

Background:

• Nonlinear optical (NLO) materials are crucial for advanced photonic devices.
• Developing new organic compounds with significant NLO properties is an active area of research.

Purpose of the Study:

• To synthesize and characterize a novel organic compound, 1A3 ((2E,4E,9E,11E)-7-chloro-2,12-diphenyltrideca-2,4,9,11-tetraene-6,8-dione).
• To investigate the photoluminescent, UV-vis spectral, and nonlinear optical properties of compound 1A3.
• To evaluate its potential for optical limiting and all-optical switching applications.

Main Methods:

• Synthesis and structural diagnosis of compound 1A3.
• Photoluminescent and UV-vis spectroscopy in chloroform and DMF.
• Nonlinear optical characterization using diffraction patterns (DPs) and Z-scan techniques.
• All-optical switching experiments with low-power visible lasers.
• Analysis of diffraction patterns using Fresnel-Kirchhoff integral equation and simulations.

Main Results:

• Compound 1A3 was successfully synthesized and characterized.
• Significant optical limiting property observed with a threshold of 12.4 mW at 473 nm.
• A high nonlinear refractive index (NLRI) of 5.921 x 10^-11 m²/W was achieved.
• Experimental diffraction patterns showed good agreement with simulated results.

Conclusions:

• Compound 1A3 demonstrates substantial nonlinear optical characteristics.
• The compound shows potential for applications in optical limiting and all-optical switching.
• The study validates the compound's suitability for photonic device development.