Fig. 5. Experimental results of measured SHG conversion efficiency spectrum for the two regions of (a) short (around L = 500 nm) and (b) long (around L = 900 nm) NWs. In blue, measured when at rest and in black when stretched by 30%. The SHG conversion efficiency spectrum was measured at 10 different spots for the x-polarization (solid line) and y-polarization (dotted line). (c and d) Simulation results calculated taking into account the specific distribution of NWs size. For longer NWs, an increase in the SHG efficiency as well as peak position shift for an excitation with x-polarization was visible in the experimental and simulations results.