Mimicking optical activity for generating radially polarized light.

We propose a new scheme for generating radially polarized light by mimicking optical activity using linear birefringence. It involves a birefringent spirally varying retarder sandwiched between two orthogonally oriented quarter-wave plates. Using Poincaré sphere representation, we show that the polarization transformation of such a scheme is equivalent to that of a spirally varying optical activity and is capable of generating radially polarized light. We demonstrate the proof-of-concept using y-cut crystalline quartz.

[1]  Inon Moshe,et al.  Production of radially or azimuthally polarized beams in solid-state lasers and the elimination of thermally induced birefringence effects. , 2003, Optics letters.

[2]  Russell A. Chipman,et al.  Analysis of spatial pseudodepolarizers in imaging systems , 1990 .

[3]  Dieter W. Pohl,et al.  Operation of a Ruby Laser in the Purely Transverse Electric Mode TE01 , 1972 .

[4]  Asher A. Friesem,et al.  The formation of laser beams with pure azimuthal or radial polarization , 2000 .

[5]  Z. Bomzon,et al.  Radially and azimuthally polarized beams generated by space-variant dielectric subwavelength gratings. , 2002, Optics letters.

[6]  J. Bisson,et al.  Radially polarized ring and arc beams of a neodymium laser with an intra-cavity axicon. , 2006, Optics express.

[7]  Yan Zhang,et al.  A new method for generating axially-symmetric and radially-polarized beams , 2005 .

[8]  Shunichi Sato,et al.  Generation of a radially polarized laser beam by use of the birefringence of a c-cut Nd:YVO4 crystal. , 2006, Optics letters.

[9]  Vladimir P. Yakunin,et al.  Generation of high-power radially polarized beam , 1999 .

[10]  S C Tidwell,et al.  Generating radially polarized beams interferometrically. , 1990, Applied optics.

[11]  M Stalder,et al.  Linearly polarized light with axial symmetry generated by liquid-crystal polarization converters. , 1996, Optics letters.

[12]  G Leuchs,et al.  Sharper focus for a radially polarized light beam. , 2003, Physical review letters.