caa a22 4500 445372001 CHVBK 20180317142950.0 cr unu---uuuuu 170323e20110301xx s 000 0 eng 10.1007/s00340-010-4355-5 doi (NATIONALLICENCE)springer-10.1007/s00340-010-4355-5 Effects of a rectangular aperture on the vectorial structure ofaGaussian beam in the far-field regime [Elektronische Daten] [J. Tang, S. Li, T. Wang, K. Zhu] With the help of the angular spectrum representation and the Gaussian function expansions of the hard-edge aperture function, the vectorial structure of a linearly polarized Gaussian beam (GB) diffracted by a rectangular aperture is analyzed in detail. It is found that the sizes of the energy flux density spots and the energy fluxes of the TE and TM terms depend on the aperture configuration and the polarization direction of the incident GB. The far fields may have smaller spots and larger energy fluxes for a GB diffracted by a rectangular aperture compared to that by a square aperture with the same beam intensity. And another potential application in information encoding and transmission for free-space communications is also proposed in addition to re-focusing to enhance the optical storage density. This encoding scheme has the benefit of easy implementation without modulating any properties of the light source. Springer-Verlag, 2011 Tang J. School of Physics, Hunan University of Science and Technology, 411201, Xiangtan, Hunan, PR China aut Li S. Physical Staff Room, Guangdong Medical College, 523808, Dongguan, Guangdong, PR China aut Wang T. School of Physics, Hunan University of Science and Technology, 411201, Xiangtan, Hunan, PR China aut Zhu K. School of Physical Science and Technology, Central South University, 410083, Changsha, Hunan, PR China aut Applied Physics B Springer-Verlag 102/3(2011-03-01), 689-694 0946-2171 102:3<689 2011 102 340 https://doi.org/10.1007/s00340-010-4355-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00340-010-4355-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Tang J. School of Physics, Hunan University of Science and Technology, 411201, Xiangtan, Hunan, PR China aut NATIONALLICENCE 700 1- Li S. Physical Staff Room, Guangdong Medical College, 523808, Dongguan, Guangdong, PR China aut NATIONALLICENCE 700 1- Wang T. School of Physics, Hunan University of Science and Technology, 411201, Xiangtan, Hunan, PR China aut NATIONALLICENCE 700 1- Zhu K. School of Physical Science and Technology, Central South University, 410083, Changsha, Hunan, PR China aut NATIONALLICENCE 773 0- Applied Physics B Springer-Verlag 102/3(2011-03-01), 689-694 0946-2171 102:3<689 2011 102 340 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer