Inverse Smith-Purcell effect near rough surfaces

• Published in: Journal of physics. B, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2013-09, Vol.46 (18), p.185401-1-5
• Main Authors: Gevorkian, Zh S, Gasparian, V
• Format: Article
• Language: English
• Subjects: absorption by moving charges; Charged-particle beams; Cherenkov radiation; diffraction and scattering; Electromagnetism; electron and ion optics; Exact sciences and technology; Fundamental areas of phenomenology (including applications); Gain; Infrared; Inverse; Laser-driven acceleration; Optics; Optimization; Photons; Physics; Quantum description of interaction of light and matter; related experiments; Quantum optics; Radiation by moving charges; Scattering; Surface chemistry; wave propagation in random media; Wavelengths
• ISSN: 0953-4075; 1361-6455
• DOI: 10.1088/0953-4075/46/18/185401

Absorption of a photon by an electron moving parallel to a rough surface is studied. In the weak scattering regime we have evaluated the absorption probability of absorption of a single photon of energy ω. It is shown that the absorption probability with diffusional contribution becomes large by a lin l > 1 factor compared to the analogous result with the single scattering contribution. The maximum of probability takes place for the infrared wavelengths and strongly depends on the particle energy. We also discuss the case of two-dimensional periodical surface profile and indicate optimal conditions for maximal absorption probability. The results can be used in electron energy gain spectroscopy and in laser-driven acceleration.