Non-collinear frequency doubling (NCFD) is presented as a technique for characterizing electrooptic crystals. Two methods can be applied: ‘Spontaneous’ NCFD uses Rayleigh scattered light as second fundamental beam thus yielding a rather simple experimental arrangement; ‘induced’ NCFD needs a precise second laser beam yet allows 3-dimensional spatial resolution. The principles of the methods and some experimental results for LiNbO3 are discussed.
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Reichert et al. (1992) studied this question.
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