Generation of radially polarized beam with a segmented spiral varying retarder
نویسندگان
چکیده
منابع مشابه
Efficient radially polarized laser beam generation with a double interferometer.
Conversion of a linearly polarized CO(2) laser beam into a radially polarized beam is demonstrated with a novel double-interferometer system. The first Mach-Zehnder interferometer converts the linearly polarized input beam into two beams with sin(2) θ and cos(2) θ intensity profiles, where θ is the azimuthal angle. This is accomplished by using two spiral-phase-delay plates with opposite handed...
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A novel means of generating radially polarized light is reported in this paper. A birefringent plate was placed in a divergent or divergent portion of the laser beam for polarisation conversation. The influence of birefringent plate thickness on the purity and efficiency of radial beam conversion is studied qualitatively. This technique is robust, simple and cost effective for radial polarisati...
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deposited by II-VI Inc., USA. The grating was designed with a period of 6.5 μm and a groove depth of about 200 nm to couple the incident beam to two neighbouring leaky modes. This mode spectrum was designed and chosen in order to obtain a wide spectral bandwidth of the polarizing effect and therewith to widen the manufacturing tolerances of the structure parameters (thicknesses and refractive i...
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KORBINIAN J. KALTENECKER,* JACOB C. KÖNIG-OTTO, MARTIN MITTENDORFF, STEPHAN WINNERL, HARALD SCHNEIDER, MANFRED HELM, HANSPETER HELM, MARKUS WALTHER, AND BERND M. FISCHER French-German Research Institute of Saint-Louis, 5, Rue du Général Cassagnou 68301, Saint-Louis, France Institute of Physics, University of Freiburg, Hermann-Herder-Strasse 3, 79104 Freiburg, Germany Freiburg Materials Research...
متن کاملGeneration of a radially polarized light beam using space-variant subwavelength gratings at 1064 nm.
The generation of radially polarized beams at a wavelength of 1064 nm by the use of a polarization transformer device consisting of space-variant subwavelength gratings (SGs) is demonstrated experimentally. The SG generates a pi phase retardation between the TE and TM polarizations, acting as a half-wave plate, reflecting the polarization vector with respect to the axes of the plate. The polari...
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ژورنال
عنوان ژورنال: Optics Express
سال: 2008
ISSN: 1094-4087
DOI: 10.1364/oe.16.015694