Formation of linearly polarized light with axial symmetry by use of space-variant subwavelength gratings |
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Authors: | Niv Avi Biener Gabriel Kleiner Vladimir Hasman Erez |
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Institution: | Optical Engineering Laboratory, Faculty of Mechanical Engineering, Technion-Israel Institute of Technology, Haifa 32000, Israel. |
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Abstract: | We present a novel method for forming linearly polarized axially symmetric beams with various polarization orders that is based on computer-generated space-variant subwavelength gratings. We introduce and experimentally demonstrate that our space-variant polarization state manipulations are accompanied by a phase modification of a helical structure that results from the Pancharatnam-Berry phase. We have verified the polarization properties of our gratings for laser radiation at 10.6-microm wavelength. |
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