Figure 2 | Scientific Reports

Figure 2

From: Origin of Shape Resonance in Second-Harmonic Generation from Metallic Nanohole Arrays

Figure 2

Experimental data of SHG from different gold thin film samples.

(a) The measured SHG signal intensity versus the aspect ratio of the rectangular hole. The inset is a typical spectrum of the SHG signal. A resonance peak is clearly observed for the AR = 2.037 sample. (b) Convolution temporal profile of the light pulse after propagating through the AR = 2.037 and AR = 0.491 patterns, with a relative time-delay readout of 6.5 fs. The inset is the measured time delay versus aspect ratio, obtained by taking square vacant areas as references.

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