Figure 3
From: Origin of Shape Resonance in Second-Harmonic Generation from Metallic Nanohole Arrays
Physical properties of the FW and SHW waveguide modes.
(a) Calculated imaginary part and the real part of the propagation constant at the wavelength of (a) 800 nm and (b) 400 nm, respectively. (c)–(f) 
-field amplitude pattern of at the wavelength of 800 nm [for the FW mode 
] and 400 nm [for the SHW mode 
] for air hole with AR = 2.3 and 1.6. The dotted rectangular denotes the air hole boundary. The incident electric field is y-polarized and the dominant component of electric field is 
. All the field intensities are in unit of the incident field intensity.
