W.Kaminsky, A.J.Fitzmaurice & A.M.Glazer: Measurement and calculation of second-harmonic generation in single-crystal spheres: Application to d-coefficients of D-mannitol, C6H14O6. J.Physics D, (submitted).

The measurement of d-coefficients from the second-harmonic efficiencies in crystal spheres is studied in KH2PO4 as a reference and compared with the Maker-fringes technique. As an example, unknown d-coefficients in orthorhombic mannitol, C6H14O6, are determined as d123=0.06(2)pm/V and compared with a calculation made with a dipole-dipole interaction model in which the effect of the electric field of a light wave on the crystal structure is applied. Modelling of the basic parameters in the calculation give good agreement with the experimentally derived values. The accuracy in determining the d-coefficients, achievable with spheres, is limited to 20%.

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