Table 2: The lengths of evanescent tails at different wavelengths for metal-insulator boundary.

Wavelength 0.5 μm1.55 μm10.5 μm300 μm

Frequency 600 THz193 THz28 THz1 THz
−36.5 + 9.4−252 + 46−8e3 + 5.2e3−6e4 + 9e4
1.01.01.01.0
Decay factor 0.16780.06310.01120.0041
Tail length 0.23 μm1.95 μm74.7 μm5800 μm
Relative tail length 0.471.267.1219.49