Abstract
We report on the investigation into an optical limiter, utilizing ablation destruction of a thin-film metallic mirror affected by high-intensity laser irradiation with nanosecond pulse duration. Its limiting threshold and dynamic range showed up being dependent on both the type of a material used and the thickness of the metallic film, as well as the type of the substrate material. An aluminum film deposited onto a polycarbonate substrate with reflection coefficient of weak irradiation being 90% has a limiting threshold 30 mJ/cm2, whilst reflection coefficient drops down to 1% at pulse energy density 200 J/cm2, wavelength being 1.06 μm.
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