Diffuse light bands for p and s polarization in microrough diffraction gratings
Anno: 1994
Autori: Brudny V.L., Iemmi CC., Ledesma SA.
Affiliazione autori: Univ. Buenos Aires, Fac. cienc. exactas naturales, dep. física, 1428 Buenos Aires, Argentine;
Istituto Nazionale di Ottica, Largo E. Fermi 6, 50125 Firenze, Italy
Abstract: We present here experimental evidence of the existence of a distinct band pattern in the diffuse background generated by the scattering of light on a micro-rough diffraction grating for both polarizations of the incident light. This sort of pattern (”diffuse light bands”) has been previously observed and studied for p-polarized incidence, but not for s-polarized. The band structure possesses similar features for both polarizations. The pattern for p-polarized incident light can be explained in terms of surface plasmon interaction with the random roughness existing on the grating; however, the mechanisms that generate the band structure for s-polarized incidence cannot be as easily identified. We discuss some possible mechanisms that include the existence of s-polarized surface excitations on a 1-D modulated structure
Giornale/Rivista: OPTIK
Volume: 97 (1) Da Pagina: 23 A: 30
Parole chiavi: Diffraction gratings; Roughness; Microroughness; Rough surface; PolarizationCitazioni: 1dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-05-12Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui