Comparison method is used with the CBN had the same kind of lattice structure

Measured using the comparison method of second-order nonlinear susceptibility CBN rates for the first time got CBN second-order nonlinear susceptibility values. We use the comparative method is the use of the cubic boron nitride has the same kind of lattice structure, the crystal surface through the same crystal orientation,  Polycrystalline diamond  susceptibility was known gallium phosphide material as reference material, in Q-switched pulsed laser as a light source for the second-order nonlinear susceptibility CBN rate  grinding wheel . The use of light and the fundamental theory of  cutting tools  relationship with the reference materials can be obtained by comparison of Gallium Phosphide on Gallium Phosphide CBN and second-order nonlinear susceptibility of the proportional relationship.