Optical properties study for PS/PMMA blend as laser active medium

Polystyrene / Polymethyl methacrylate (PS/PMMA) blend with different ratios (0, 25, 40, 50, 60, 100) % were prepared by casting method. The prepared samples were spectrophotometer evaluated; the result found that the absorption spectra increase with PS ratio up to 50% PS/ 50% PMMA, and shifted towered the longer wavelength. Also, was seen the decreasing in energy gap with PS ratio increasing. From the optical properties were calculated all constants such as dielectric constant parts, refractive index these results proved enhancement in optical constants. The optical microscopic examination was investigated.