Enhanced Transmission and Reflection of Femtosecond Pulses by a Single Slit

Abstract

We show that a physical mechanism responsible for the enhanced transmission and reflection of femtosecond pulses by a single subwavelength nanoslit in a thick metallic film is the Fabry-Perot-like resonant excitation of stationary, quasistationary and nonstationary waves inside the slit, which leads to the field enhancement inside and around the slit. The mechanism is universal for any pulse-scatter system, which supports the stationary resonances. We point out that there is a pulse duration limit below which the slit does not support the intraslit resonance.

4 pages, 3 figures

References in corpus (2)

• The role of electromagnetic trapped modes in extraordinary transmission in nanostructured materials
• Resonant backward scattering of light by a two-side-open subwavelength metallic slit

Cited by in corpus (4)

• Resonant Transmission of Electromagnetic Fields through Subwavelength Zero-$\epsilon$ Slits
• Enhanced Transmission of Light and Particle Waves through Subwavelength Nanoapertures by Far-Field Interference
• Interference-induced enhancement of intensity and energy of a multimode quantum optical field by a subwavelength array of coherent light sources
• Advanced analytical method based on Green's theorem for light transmission through subwavelength structures of multiple configurations in metal films