Abstract
We propose an efficient method to achromatically transform a circularly polarized beam to a radially polarized beam in the visible range using segmented subwavelength metal wire gratings. We present a theoretical analysis of the relationship between the polarization purity of the transmitted beams and the number of segments. To verify our analysis, we fabricate a device composed of four quadrant sectors of subwavelength metal wire gratings and measure the transformation properties of the device at visible wavelengths of , , and , which show a good agreement with theoretical results and the broadband achromatic property of the generation method.
© 2009 Optical Society of America
Full Article | PDF ArticleMore Like This
Gilad M. Lerman and Uriel Levy
Opt. Lett. 33(23) 2782-2784 (2008)
Ze’ev Bomzon, Gabriel Biener, Vladimir Kleiner, and Erez Hasman
Opt. Lett. 27(5) 285-287 (2002)
Z. Ghadyani, I. Vartiainen, I. Harder, W. Iff, A. Berger, N. Lindlein, and M. Kuittinen
Appl. Opt. 50(16) 2451-2457 (2011)