title: 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.
authors.affiliation: Nanostructures Engineering and Modeling Laboratory, Metallurgical Engineering & Materials Science, Indian Institute of Technology Bombay, Mumbai, MH, India 400076.
authors.forename: Sumit
authors.initials: S
authors.lastname: Saxena
authors.affiliation: Nanostructures Engineering and Modeling Laboratory, Metallurgical Engineering & Materials Science, Indian Institute of Technology Bombay, Mumbai, MH, India 400076.
authors.forename: Raghvendra Pratap
authors.initials: RP
authors.lastname: Chaudhary
authors.affiliation: Nanostructures Engineering and Modeling Laboratory, Metallurgical Engineering & Materials Science, Indian Institute of Technology Bombay, Mumbai, MH, India 400076.
authors.forename: Abhay
authors.initials: A
authors.lastname: Singh
authors.affiliation: Nanostructures Engineering and Modeling Laboratory, Metallurgical Engineering & Materials Science, Indian Institute of Technology Bombay, Mumbai, MH, India 400076.
authors.forename: Saurabh
authors.initials: S
authors.lastname: Awasthi
authors.affiliation: Nanostructures Engineering and Modeling Laboratory, Metallurgical Engineering & Materials Science, Indian Institute of Technology Bombay, Mumbai, MH, India 400076.
authors.forename: Shobha
authors.initials: S
authors.lastname: Shukla