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Updated: Mar 1, 2026

High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques
Published on: December 3, 2013
Note: Using a Kösters prism to create a fringe pattern
R F Capellmann1, J Bewerunge1, F Platten1
1Condensed Matter Physics Laboratory, Heinrich Heine University, D-40225 Düsseldorf, Germany.
Abstract:
The interference of two crossed laser beams results in a standing wave. Such fringe patterns are exploited in different instruments such as interferometers or laser-Doppler anemometers. We create a fringe pattern in the sample plane of a microscope using a compact apparatus based on a Kösters prism. The fringe pattern is shown to be spatially and temporally very stable, covers a large area, and its spacing is easily tunable. In addition, we exploit it to impose a sinusoidal potential on colloidal particles.
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