English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Both dynamic and static approaches are proposed and investigated forcontrolling the optical phase of a p-polarized light wave that is guidedthrough a surface-patterned metallic structure with subwavelength features. Fordynamic control, field-induced transparency (FIT) from photo-excited electronsin a slit-embedded atomic system show up within a narrow frequency window formodulating the intensity of focused transmitted light in the near-field region.Based on the electromagnetic coupling, this is facilitated by surface plasmonsbetween the two FIT-atom embedded slits. For static control, the role ofsurface curvature is obtained for focused transmitted light passing through aGaussian-shaped metallic microlens embedded with a linear array of slits, inaddition to a negative light-refraction pattern, which is associated withhigher-diffraction modes of light, under a large angle of incidence in thenear-field region. Most interesting, however, this anomalous negativelight-refraction pattern becomes suppressible with leaked higher-orderwaveguide modes of light passing through a very thin film. At the same time, itis also suppressible with a reinforced reflection at the left foothill of aGaussian-shaped slit array for the forward-propagating surface-plasmon wave atlarge angles of incidence. A prediction is given for near-field focusing oflight with its sharpness dynamically controlled by the frequency of the lightin a very narrow window. Moreover, a different scheme based on Green's secondintegral identity is proposed for overcoming a difficulty in calculating thenear-field distribution very close to a surface by means of afinite-difference-time-domain method.

Dynamic and static control of the optical phase of guided p-polarized light for near-field focusing at large angles of incidence