It is observed that there exist two different classes of vector light beams that have the same first-order paraxial approximation. They are characterized by the axial and transverse orientations of a constant unit vector that comes from the constraint of transversality condition. Their vectorial structures in the nonparaxial regime and angular momentum properties are compared.
© 2014 Optical Society of America
Lasers and Laser Optics
Original Manuscript: December 6, 2013
Revised Manuscript: January 25, 2014
Manuscript Accepted: March 10, 2014
Published: April 8, 2014
Chun-Fang Li and Shuang-Yan Yang, "Two different classes of vector beams that have the same paraxial approximation," Opt. Lett. 39, 2318-2321 (2014)