17 January 2003 Space-variant polarization-state manipulation with computer-generated subwavelength gratings
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Proceedings Volume 4984, Micromachining Technology for Micro-Optics and Nano-Optics; (2003) https://doi.org/10.1117/12.477853
Event: Micromachining and Microfabrication, 2003, San Jose, CA, United States
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.
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Erez Hasman, Erez Hasman, Vladimir Kleiner, Vladimir Kleiner, Gabriel Biener, Gabriel Biener, Avi Niv, Avi Niv, "Space-variant polarization-state manipulation with computer-generated subwavelength gratings", Proc. SPIE 4984, Micromachining Technology for Micro-Optics and Nano-Optics, (17 January 2003); doi: 10.1117/12.477853; https://doi.org/10.1117/12.477853

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