We demonstrate an efficient transformation of a linearly polarized Gaussian beam to a radially or an azimuthally polarized doughnut (0,1)* Laguerre-Gaussian beam of high purity. We use a spatially variable retardation plate, composed of eight sectors of a λ/2 retardation plate, to transform a linear polarization distribution to radial/azimuthal distribution. We transformed an Nd:YAG Gaussian beam with M2=1.3 to a radially and azimuthally polarized (0,1)* Laguerre-Gaussian beams with M2=2.5 and degree of radial/azimuthal polarization of 96-98%.
© 2007 Optical Society of America
Original Manuscript: January 24, 2007
Revised Manuscript: March 14, 2007
Manuscript Accepted: March 14, 2007
Published: May 3, 2007
G. Machavariani, Y. Lumer, I. Moshe, A. Meir, and S. Jackel, "Efficient extracavity generation of radially and azimuthally polarized beams," Opt. Lett. 32, 1468-1470 (2007)