Fabrication of 3D Photonic Crystals by means of Two-photon Polymerization

Centre for Micro-Photonics and Centre of Excellence for Ultrahigh-bandwidth Devices for Optical Systems (CUDOS), Swinburne University of Technology

3.30pm, Friday 4 March 2005, Seminar Room AR103, Graduate Research Centre

Two-photon polymerization (2PP) is a powerful technique for the fabrication of three-dimensional (3D) micro- and submicro-structures. When tightly focused into the volume of a photosensitive resin, the polymerization process can be initiated by non-linear absorption of near-infrared femtosecond laser pulses within the focal volume. By moving the laser focus three-dimensionally through the resin, any 3D structure can be fabricated. If the applied laser powers are only slightly above the polymerization threshold, 3D structuring with a resolution down to 150 nm can be realized. In this talk I will present experimental results on the fabrication of photonic crystals by means of 2PP using optically high quality organic-inorganic hybrid polymers and first results on their application as superprism devices.

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