Quantitative characterization of second order nonlinear light conversion from inorganic and organic nano(micro)-structures

Second harmonic generation (SHG) and sum frequency generation (SFG) are the nonlinear optical processes of doubling or summing the frequency of input light by passing it through non-centrosymmetric crystalline materials. Quantitative modelling of their nonlinear processes is of great importance for optimizing nano(micro)crystal based nonlinear photonic devices for applications in frequency conversion, multiplexed signal transmission and noninvasive sensing. Here we demonstrate the quantitative analyses of optical nonlinear conversion in inorganic and organic nano(micro)structures with known and unknown second order susceptibility tensor.