Second-Order Nonlinearity Assisted by Dual Surface Plasmon Resonance Modes in Perforated Gold Film

Figure 3

(a) The spectrum for 𝐸_𝑥⁽¹⁾ component of FFW with wavelength 630 nm. The spectrum for (b) 𝐸_𝑦⁽²⁾ and (c) 𝐸_𝑥⁽²⁾ component of SHG with wavelength 315 nm.

(a)

(b)

(c)