Reflective and absorptive anti-laser film for 1 064 nm, 532 nm, and 680 nm wavelengths

With ZrO2 and AlCl2Pc/SiO2 as high and low refractive index materials respectively, the high reflective film of 21 layers was deposited on well-cleaned polycarbonate substrate via sol-gel process. The film was designed as l0/6-l0/3 typed periodic symmetric coating stacks. Reflection to 1 064 nm and 532 nm lasers was realized. At the same time, absorption to 680 nm laser was obtained. The transmissivity at 1 064 nm, 532 nm, and 680 nm were 1.67%, 18.24% and 2.4% respectively. With this method, anti-laser protection was easily acquired at these three laser wavelengths.