2 METHOD AND SYSTEM FOR DETERMINING SECOND-ORDER NONLINEAR OPTICAL COEFFICIENTS

摘要

a method is provided for determining a second-order non-linear optical coefficient of the material. The method includes, at least in part, a sample consisting of said material; and providing a (1 35), the first pulse and the second pulse wave and a first polarization state and the first light signal the two polarization states, each having (s _i1 ) and a second optical signal (s _i2 ) is, combined with the same third pulse of the sample is the first and the second pulse, the first and in a manner that the two polarization states of the second harmonic generated light signal (s _u3 ) with the function of the third polarization state, and a step to make the impact on the sample. The method includes determining a plurality of power measurements relating to the second-harmonic light signals, based on said plurality of power measurements includes the step of determining the secondary non-linear optical coefficient further. The method also includes performing a power measurement of the second-harmonic light signals, as the first and second polarization states are variable.