Plasmonic micro lens for extraordinary transmission of broadband light.

ABSTRACT: Extraordinary transmittance and focusing of light in quasi far field region using miniaturized optical devices is a daunting task. A polarization independent, broadband, planar metallic transmissive micro aperture capable of achromatically focusing visible light in quasi far field region is proposed. The calculated enhancement factor of transmission efficiency was about ~2.2. The total transmission after the aperture is about 60%. This high throughput focusing device will open new avenues for focusing electromagnetic energy in the wide area of sensors and energy concentration.

SUBMITTER: Saxena S 

PROVIDER: S-EPMC4093651 | biostudies-literature | 2014 Jul

REPOSITORIES: biostudies-literature