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cw spontaneous parametric scattering in LiIO3 has been observed. The results show that the nonlinear coefficient d31 for LiIO3 is ∼18×10−9 esu. The ordinary index of refraction curve for this crystal has also been determined from 1.2μ past the ir-absorption edge at 5.4μ to near 7μ; no resonance in the nonlinear susceptibility was found near this particular absorption band.
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Campillo et al. (1970) studied this question.
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