Third-order optical nonlinearities and optical-limiting properties of a Pararosanilin dye in liquid and solid media

Research paper by G. Vinitha, A. Ramalingam

Indexed on: 14 Sep '08Published on: 14 Sep '08Published in: Laser Physics


Solid-state dye-doped polymers are attractive alternatives to the conventional liquid-dye solutions. In this paper, the third-order nonlinear optical properties of a Pararosanilin dye in 1-Butanol and a dye-doped polymer film were measured by the Z-scan technique using a continuous wave 532-nm diode-pumped Nd:Yag laser. This material exhibits a negative optical nonlinearity. The low-power optical-limiting properties based on the nonlinear refraction of this material have also been studied.