In this work we investigate the behavior of the instantaneous Poynting vector of symmetrical paraxial laser beams, namely the modification of the instantaneous Poynting vector and the radiation pattern during propagation in free space for a variety of such beams. As an example, we have investigated in detail the behavior of the instantaneous Poynting vector and the radiation pattern of the paraxial Gaussian and Bessel beams.
© 2012 Optical Society of America
Lasers and Laser Optics
Original Manuscript: December 8, 2011
Revised Manuscript: January 13, 2012
Manuscript Accepted: January 19, 2012
Published: May 17, 2012
Igor A. Litvin, "The behavior of the instantaneous Poynting vector of symmetrical laser beams," J. Opt. Soc. Am. A 29, 901-907 (2012)