Fabrication of three-focal diffractive lenses by two-photon polymerization technique
Fabrication of submicron-height relief of three-focal diffractive lenses using two-photon polymerization is studied. Optical properties of the designed lenses are investigated theoretically and experimentally. The proposed design of the combined diffractive–refractive lenses is promising for the realization of three-focal optical ophthalmological implants with predetermined light intensity distribution between the foci. The realized three-focal optical element has a diameter size of 2.7 mm with the focal distances in the range of 27–34 mm.
KeywordsPhase Function Diffraction Efficiency Zone Plate Paraxial Approximation Diffractive Optical Element
We would like to gratefully acknowledge the EC FP7-Marie Curie-IIF Program (Proposal No. 235969), the Russian Federation state contract no. 07.514.11.4060, and the German project REMEDIS for support of this work.
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