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Accession Number
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N20120014274
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Title
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Translational Polarization Rotator.
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Publication Date
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2012
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Media Count
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11p
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Personal Author
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D. T. Chuss E. J. Wollack G. Pisano K. U-Yen M. Ng S. Ackiss
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Abstract
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We explore a free-space polarization modulator in which a variable phase introduction between right- and left-handed circular polarization components is used to rotate the linear polarization of the outgoing beam relative to that of the incoming beam. In this device, the polarization states are separated by a circular polarizer that consists of a quarter-wave plate in combination with a wire grid. A movable mirror is positioned behind and parallel to the circular polarizer. As the polarizer-mirror distance is separated, an incident liear polarization will be rotated through an angle that is proportional to the introduced phase delay. We demonstrate a prototype device that modulates Stokes Q and U over a 20% bandwidth.
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Keywords
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Circular plates
Circular polarization
Grid generation(Mathematics)
Laser beams
Light modulators
Linear polarization
Poincare spheres
Prototypes
Rotation
Topology
Translational motion
Waveguides
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Source Agency
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National Aeronautics and Space Administration
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NTIS Subject Category
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46C - Optics & Lasers
49 - Electrotechnology
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Corporate Author
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Goddard Space Flight Center, Greenbelt, MD.
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Document Type
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Journal article
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Title Note
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N/A
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NTIS Issue Number
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1307
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Contract Number
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N/A
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