Studies of third order nonlinearity and thermal diffusivity of C3OC dye using thermal lens technique

• Cyanidin-3-O-glucoside chloride (C3OC) dye film is produced on glass substrates with a 5 μm thickness. • The structure dependence of the optoelectronic properties and the optical properties of a prepared C3OC:PMMA film was studied. • We conduct experiments using open aperture and close aperture Z-scan methods to investigate the nonlinear optical (NOP) characteristics of C3OC solution and C3OC:PMMA film. • The thermal lens (TELS) technique was used to investigate the thermo-optical properties, nonlinear refractive index, and thermal diffusivity of C3OC dye. The optical limiter capabilities of the C3OC dye are being investigated as a potential use. An FT-IR spectrometer and a UV–Visible spectrometer were utilised in order to characterise the Cyanidin-3-O-glucoside chloride (C3OC) dye. The dye’s thermally induced optical nonlinearity was measured in a dimethylformamide solvent using an adjustable diode-pumped solid-state (DPSS) laser at 473 nm. The optical response was measured using the Z-scan technique. The dye showed negative and large nonlinear refractive index) NRX) values, with high nonlinear absorption coefficients (NBO). Because of its ability to change with concentration, the NRX is a viable candidate for applications in the field of nonlinear optics. Thermal lens (THS) technique was used to investigate thermo-optical properties and the NRX. The optical limiter capabilities of the C3OC dye are being investigated as a potential use.