A novel method for rapid polarization measurement is suggested. The method is based on a periodic space-variant polarizer that can be realized by use of subwavelength metal-stripe gratings. The Stokes parameters of the incident beam are determined by Fourier analysis of the space-variant intensity transmitted through the grating, thus permitting real-time polarization measurement. We discuss the design and realization of such polarizers and demonstrate our technique with polarization measurements of CO<sub>2</sub>-laser radiation at a wavelength of 10.6μm.
© 2001 Optical Society of America
(260.5430) Physical optics : Polarization
Ze’ev Bomzon, Gabriel Biener, Vladimir Kleiner, and Erez Hasman, "Spatial Fourier-transform polarimetry using space-variant subwavelength metal-stripe polarizers," Opt. Lett. 26, 1711-1713 (2001)