Spectral and Spatial Analysis on Near-field Fresnel Coefficient using Femtosecond Laser

Plasmonic crystals show enhanced far-field Fresnel transmission coefficient typically of the order 0.1, which is believed to be mediated by a much larger near-field Fresnel transmission coefficient. Theoretically, larger-than-unity near-field Fresnel transmission coefficient has been predicted for the tangential H-field.