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The nonlinear optical coefficients of AlN have been determined as ‖d33‖= (23.2±35%) dQ11 and ‖d31‖ ≲0.04‖d33‖ for the c-plate film and for a fundamental beam at 1.064 μm. The result is discussed with reference to the bond-charge model.
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Fujii et al. (1977) studied this question.
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