Fresnel Lenses fabricated by femtosecond laser micromachining on Polymer 1D Photonic Crystal

Abstract

We report the fabrication of micro Fresnel lenses by femtosecond laser surface ablation on polymer 1D photonic crystals. This device is designed to focus the transmitted wavelength of the photonic crystal and filter the wavelengths corresponding to the photonic band gap region. Integration of such devices in a wavelength selective light harvesting and filtering microchip can be achieved. © Owned by the authors, published by EDP Sciences, 2013.