A novel shearing interferometer is developed using a dynamic grating realized by a twisted nematic liquid-crystal spatial light modulator as the shearing element. A standard phase shifting algorithm can be easily achieved by changing the grating pattern displayed on the spatial light modulator. A shearing interferometer with no moving part and no requirement for calibration of the value of the phase shift was therefore achieved.
Digital shearing interferometer with a liquid-crystal spatial light modulator
2005-01-01
284500 byte
Conference paper
Electronic Resource
English
Digital Shearing Interferometer with a Liquid-Crystal Spatial Light Modulator
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