The human eye, sensors and photoreceptors can be damaged if they are submitted to laser beams with high intensities and low divergence. In the military field, an optical sensor can be exposed beyond its capacities and be damaged by pulsed laser radiations. In order to have a protection against such threats, passive optical limiting is used1. It is based on nonlinear effects which allow to reduce the intensity of aggressive laser radiations. Nowadays, the development of nonlinear filters for optical limiting is a challenge in order to have protection against threats caused by a pulsed laser beam. As a matter of fact, tactical lasers are a threat toward sensing devices between hundreds of meters and some kilometers.^2,3