Optical switching in metallic photonic crystal slabs with photoaddressable polymers
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- Nau, D., Bertram, R., Buse, K. et al. Appl. Phys. B (2006) 82: 543. doi:10.1007/s00340-005-2103-z
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We report on a metal-polymer compound material with optical properties that can be reversibly switched all-optically. The key element is a metallic photonic crystal slab with an additional layer of photoaddressable material that provides a large variable birefringence and sharp resonances. Pump-probe experiments show a shift of the photonic crystal resonances that depends on the pump polarization and on the exposure. Comparison of the results with calculations from a scattering-matrix theory allows one to determine the refractive index changes for different polarization geometries and to model our compound material quantitatively.