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      Experimental realization of a high-contrast grating based broadband quarter-wave plate

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      Author
      Mutlu, M.
      Akosman, A. E.
      Kurt, G.
      Gokkavas, M.
      Özbay, Ekmel
      Date
      2012-12-03
      Source Title
      Optics Express
      Print ISSN
      1094-4087
      Publisher
      Optical Society of America
      Volume
      20
      Issue
      25
      Pages
      27966 - 27973
      Language
      English
      Type
      Article
      Item Usage Stats
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      Abstract
      Fabrication and experimental characterization of a broadband quarter-wave plate, which is based on two-dimensional and binary silicon high-contrast gratings, are reported. The quarter-wave plate feature is achieved by the utilization of a regime, in which the proposed grating structure exhibits nearly total and approximately equal transmission of transverse electric and transverse magnetic waves with a phase difference of approximately pi/2. The numerical and experimental results suggest a percent bandwidth of 42% and 33%, respectively, if the operation regime is defined as the range for which the conversion efficiency is higher than 0.9. A compact circular polarizer can be implemented by combining the grating with a linear polarizer. (C) 2012 Optical Society of America
      Keywords
      Polarizer
      Reflectors
      Fabrication
      Laser
      Permalink
      http://hdl.handle.net/11693/13020
      Published Version (Please cite this version)
      http://dx.doi.org/10.1364/OE.20.027966
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      • Department of Electrical and Electronics Engineering 3524
      • Department of Physics 2299
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