Super-thin Mikaelian's lens of small index as a beam compressor with an extremely high compression ratio
2013 (English)In: Optics Express, ISSN 1094-4087, Vol. 21, no 6, 7328-7336 p.Article in journal (Refereed) Published
Based on a focusing Mikaelian's lens with small refraction index (0<n<<1), an optical device is designed as a super-thin optical beam compressor (e.g., thickness = 3 lambda(0)) with an extremely high beam compression ratio (more than 19:1). This device can also be used as a beam collimator or a cylindrical-to-plane wave convertor with a much higher transmissivity than a zero-index metamaterial slab. The output beam shows good directionality in both near field and far field. A metamaterial structure is also designed to realize this device and verify its performance with finite element method (FEM).
Place, publisher, year, edition, pages
2013. Vol. 21, no 6, 7328-7336 p.
Beam compressor, High compression ratio, Metamaterial structures, Near fields, Optical beams, Output beam, Refraction index, Transmissivity
Engineering and Technology
IdentifiersURN: urn:nbn:se:kth:diva-122119DOI: 10.1364/OE.21.007328ISI: 000316796000071ScopusID: 2-s2.0-84875719561OAI: oai:DiVA.org:kth-122119DiVA: diva2:621229
FunderSwedish Research Council, 621-2011-4620
QC 201305142013-05-142013-05-132013-11-19Bibliographically approved