Abstract
Recent developments in the synthesis, production and characterization of multilayer optical coatings provide precise group-delay dispersion control over broadband spectral ranges. High laser induced damage threshold of dielectric coatings allow exposing them at high intensity laser radiation on the order of 10-1000 GW/cm2. Until now these coatings have been considered in the linear regime only. At the same time, at the intensities close to the laser-induced damage threshold optical coating exhibit nonlinear effects. Namely, intensity dependent addition to the refractive index n2I (Kerr effect) cause variation of the reflectance coefficient [1]. The coatings with predictable increase of reflectance at high intensities can be used for the development of innovative elements for ultrafast optics, special edge filters with extremely steep reflectance slope in the vicinity of the central wavelength were designed, produced and carefully investigated. The coatings exhibit predictable increase of reflectance at high intensities.
© 2017 IEEE
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