Quantitative Measurements of Second-Order Nonlinear Susceptibility with Collinear Reflective Second Harmonic Generation
Polarization-dependent second harmonic gen-eration is a widely utilized technique for char-acterizing symmetry.However,in collinear re-flective geometry,the essential beam-splitting device significantly influences both the polar-ization state of the fundamental and harmonic beams,thereby affecting the accuracy of the obtained second-order nonlinear susceptibility.Here,we propose a data correction method to solve this problem to obtain accurate second-order nonlinear susceptibility.The feasibility and generality of the method are demonstrated through theoretical and experimental valida-tion.
Second harmonic generationPolarization distortionBeam-splitting deviceSecond-order nonlinear susceptibility
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