Holographic lithography for the fabrication of complex diffractive elements. - In: Proceedings of the ICO Topical Meeting on Optoinformatics/Information Photonics '2006, (2006), S. 53
Tuneable planar integrated optical systems. - In: Frontiers in optics 2006, (2006), insges. 1 S.
Integrated micro-optics for microfluidic systems. - In: Technische Systeme für Biotechnologie und Umwelt, (2006), S. 105-111
Fabrication technologies for chirped refractive microlens arrays. - In: Current developments in lens design and optical engineering VII, 2006, S. 62880O, insges. 10 S.
Planar optics for the integration of microsystems with optical and fluidic functionality. - In: Abstracts, (2006), insges. 1 S.
Efficient coupling mechanisms for planar integrated free space optical systems. - In: Maschinenbau von Makro bis Nano, 2005, [02.P.06], insges. 2 S.
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Zur Analyse und Dimensionierung perspektivischer Abbildungen. - In: Maschinenbau von Makro bis Nano, 2005, [02.P.02], insges. 8 S.
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Planar integration of microoptical systems and its application to spectral imaging. - In: Hyperspectral data for new vision applications, (2005), S. 35-38
Integrated micro-optics for microfluidic systems. - In: DGaO-Proceedings, ISSN 1614-8436, Bd. 106.2005, P33, insges. 2 S.
Within the field of biomedicine and life science microfluidic systems gain importance for a variety of applications. For testing the reaction of cells and bacteria to different chemicals it is possible to use optical tweezers for moving them between different reservoirs. However, when leaving the cells untrapped in the reservoirs they often adhere to the channel bottom and cannot be removed without damage. Keeping the objects in the trap for the whole experiment would be very time consuming. As an approach for making these experiments more efficient integrated microoptical elements can be used for generating a specific light distribution e.g. a set of focal points in the reservoirs. Within these foci the particles will be kept away from the walls of the reservoirs so that they can be removed easily. We present the concept, systems design as well as first experiments to evaluate the potential of this approach.
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Design considerations for integrated microoptical systems combining refractive and diffractive optical components. - In: Optical design and engineering II, 2005, S. 59622B, insges. 7 S.
Planar integrated microoptical systems have been demonstrated for a variety of applications such as optical interconnects, sensing and security applications. Diffractive optical elements provide the necessary design freedom to optimize the optical performance of such systems along the folded optical axis. For enhanced optical efficiency it is necessary to combine diffractive and refractive elements within such systems. Hereby the refractive components provide most of the optical power while the diffractive elements are used as correction elements for optimized system performance. The integration of refractive components has significant consequences on the geometry of planar integrated optical systems as well as on the optical systems design. Based on this approach we present various designs for efficient planar-optical (phase-contrast) imaging systems. We compare various possibilities for the simulation of diffractive and holographic optical components and their integration in the design of planar microoptical systems. To this end we apply commercial design software (e.g. Zemax, ASAP) as well as self programmed tools.