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We report a technique to produce three-dimensional maps of transparent objects using the Kerr coefficient as a contrast agent. The method is based on the spatial modifications of a probe pattern focused into the medium.
The digital reverse propagation (DRP) method [1] used in linear digital holography to form images from recorded holograms also works in Kerr media. The principle has been experimentally demonstrated recently in defocusing media [2]. Here, we report for the first time experimental results in focusing media.
We report experimental image reverse propagation in focusing Kerr media. These results are compared with a linear Zernike filter operation. A method for the measurement of the nonlinear coefficient is derived from these results.
We demonstrate a simple method to detect small phase steps using propagation in Kerr media. In experiments, nonlinear diffraction in acetone produced high contrast signals for a π/80 phase mask.
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