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WeSer
Determination of the complex amplitude of a wavefield by means of a common path approach (KO 2894/6-1)
The aim of project WeSer is the development of both a method and an experimental setup to measure the complex amplitude of wave fields by means of a common path approach. In this scheme an interference pattern is formed by the superposition of the investigated wave field with a laterally shifted copy of itself. Since both of the interfering wave fields travel almost along the same path, this technique will make low demands regarding the coherency of the light and at the same time will provide enhanced stability and robustness. In the figure a sketch of a novel shearing interferometer is shown, which uses a liquid crystal spatial light modulator to produce the shear. The presented configuration was developed with regards to the specific requirements as given by the aim of the project. Furthermore, a patent has been applied for, which is based on that concept.
Shearing interferometer based on a lyquid crystal spatial light modulator
Funded by
DFG
Timeframe
2008/04/01 - 2011/04/01
Department Manager
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