Contrast reversal with a point-diffraction interferometer with a carrier frequency |
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Authors: | F Quercioli G Molesini |
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Institution: | Istituto Nazionale di Ottica, Firenze, Italy |
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Abstract: | A modified point diffraction interferometer is presented, where interference is made in the first diffracted order of a composite grating. A 180° phase shift between reference and object beam is introduced to obtain a complete image contrast reversal. |
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