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EnglishComplex light fields, including evanescent Bessel beams, can be generated at dielectric interfaces by means of oil-immersion optics operating in total internal reflection conditions. Here we report on the observation of evanescent complex fields produced on a dielectric multilayer through the interference of surface modes resonantly sustained by the multilayer itself. The coupling to surface modes is attained by modifying the wavefront of an incident laser beam in such a way that the resulting intensity distribution in k-space matches the dispersion of the surface mode. The phase of surface modes can be further controlled, and two-dimensional vortex beams can also be produced according to the same working principle. (C) 2015 Optical Society of America
Resonant evanescent complex fields on dielectric multilayers / Angelini, A.. - In: OPTICS LETTERS. - ISSN 0146-9592. - 40:24(2015), pp. 5746-9-5749. [10.1364/OL.40.005746]
| Titolo: | Resonant evanescent complex fields on dielectric multilayers | |
| Autori: | ||
| Data di pubblicazione: | 2015 | |
| Rivista: | OPTICS LETTERS | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1364/OL.40.005746 | |
| Abstract: | Complex light fields, including evanescent Bessel beams, can be generated at dielectric interface...s by means of oil-immersion optics operating in total internal reflection conditions. Here we report on the observation of evanescent complex fields produced on a dielectric multilayer through the interference of surface modes resonantly sustained by the multilayer itself. The coupling to surface modes is attained by modifying the wavefront of an incident laser beam in such a way that the resulting intensity distribution in k-space matches the dispersion of the surface mode. The phase of surface modes can be further controlled, and two-dimensional vortex beams can also be produced according to the same working principle. (C) 2015 Optical Society of America | |
| Full-text (pubblici): | partially_open | |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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| Rev Manuscript - Resonant evanescent complex fields on dielectric multilayers (4).pdf | Documento in Post-print | PUBBLICO - Tutti i diritti riservati | Visibile a tuttiVisualizza/Apri |
http://hdl.handle.net/11696/63092
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