Dr. Hans Zappe
Department of Microsystems Engineering, University of Freiburg, Germany
October 11, 2016 | 12:00 to 01:00 | 490 Cory Hall
Host: Roya Maboudian
The use of liquids and interfaces for sculpting optical wavefronts has led to a broad spectrum of optical components, some clever, some useful, occasionally both. The combination of micro-fluidics, micro-optics and micro-fabrication has been employed to realize, for example: tunable lenses; optical switches; fluidic waveguides; liquid lasers; reconfigurable apertures. A key feature of most of these devices is that they may be tuned, changing their optical properties through modulation of fluid surfaces, menisci, and interfaces.
We will look at some recent advances in two-dimensional and three-dimensional optofluidics which show that high-quality optical imaging and beam formation is possible using fluidic components. We will consider high-contrast liquid-based tunable irises and variable slit apertures, hydraulically-actuated fluid-filled membrane lenses with aberration free tuning, and tubular fluidic systems allowing controlled variation of astigmatism. These compact, self-contained devices allow entirely new approaches for realization of high-performance imaging microsystems.
www.imtek.uni-freiburg.de/professuren/mikrooptik
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