Thermal nonlinearity and all-optical switching of synthesized Azo-Cl compound

Azo-Cl compound is synthesized and fully characterized via NMR and mass spectroscopies. The Azo-Cl compound thermal properties, theoretical chemical shifts, chemical structure, electron absorption spectrum, frontier molecular orbitals, the atomic dipole moment, corrected Hirshfeld charge analysis and electrostatic molecular potential of the Azo-Cl compound are studied in details. The Azo-Cl compound nonlinear refractive index (NLRI) is estimated via diffraction patterns (DPs) and the Z-scan, using low power continuous wave (cw) laser beam. The all-optical switching (AOS) property is recognized in the Azo-Cl compound using two laser beams. We found that the value of the NLRI of sample calculated by the diffraction patterns is greater than the value calculated by the Z-scan, due to the use of different input powers in both cases. The experimental results proved that the sample showed a high NLRI in the range of 10 −7 calculated by the Z-scan method under low input power of 5 mW, which indicates that the Azo-Cl compound is a good candidate to be used in optical device applications.