Linear and nonlinear optical properties of dimethylamino pyridinium p-bromo-chlorophenolate crystal for nonlinear optical devices

Analysis of the growth and physicochemical properties of the newly developed stilbazolium derivative 4-N,N-dimethylamino-4-N-methyl stilbazolium 2-formyl benzene sulfonate (DSFS) single crystal: an effective material for nonlinear optical applications

“…During the translation of the sample, under the Gaussian beam with respect to variation of transmittance, the intensity-dependent absorption of the material is studied via an open aperture and the nonlinear refractive index is measured with reference to the change in light intensity via the closed aperture method with a finite slit or aperture in front of the output detector. 53 With a helium–neon laser (632.8 nm) as the source, the Z-scan technique was carried out. With the aid of a Gaussian filter, the laser beam is converted to a Gaussian beam and the transformed beam is permitted to go through a convex lens with a focal distance of 30 mm to produce a focused beam with a beam waist diameter ( W 0 ) of 12.05 μm.…”

Enhancement of the linear, nonlinear and optical limiting properties of epoxy resin decorated by zinc oxide nanoparticles

“…The dependence of the refractive index, n, of the sample on the wavelength is obtained using equation (5) [65] is displayed in figure 4(c). Note from figure 4(c) that the refractive index decreases with increasing wavelength sharply from 300 nm to 400 nm and decreases slowly from 400 nm to 900 nm.…”