Space-variant polarization-state manipulation with computer-generated subwavelength gratings

Erez Hasman, Vladimir Kleiner, Gabriel Biener, Avi Niv

Research output: Contribution to journalConference articlepeer-review

3 Scopus citations


Novel methods for space-variant polarization-state manipulation using subwavelength metal and dielectric gratings are presented. By locally controlling the period and direction of the grating, we show that any desired polarization can be achieved. The methods presented in this paper are generic to any portion of the spectrum, and we present experimental demonstrations of our theory using CO2 laser radiation at a wavelength of 10.6μm. Moreover, we exploited our computer-generated subwavelength gratings to demonstrate a polarization Talbot self-imaging, as well as nondiffracting periodically space-variant polarization beams, and a unique method for real-time polarization measurement. We also present novel optical phase elements based on the space-domain Pancharatnam-Berry phase. Unlike diffractive and refractive elements, the phase is not introduced through optical path differences, but results from the geometrical phase that accompanies space-variant polarization manipulation. We intoduce and experimentally demonstrate Pancharatnam-Berry phase optical elements (PBOEs) based on computer-generated subwavelength gratings such as polarization beam-splitters, optical switches and spiral phase.

Original languageEnglish
Pages (from-to)171-185
Number of pages15
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 26 May 2003
Externally publishedYes
EventMicromachining Technology for Micro-optics and Nano-optics - San Jose, CA, United States
Duration: 28 Jan 200329 Jan 2003


  • Berry's phase
  • Computer-generated holograms
  • Ellipsometry and polarimetry
  • Polarization
  • Subwavelength gratings
  • Talbot effect

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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