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Vectorial Structure of Non-Paraxial Linearly Polarized Gaussian Beam in Far Field |
| ZHOU Guo-Quan;CHEN Liang;NI Yong-Zhou |
| School of Sciences, Zhejiang Forestry University, Lin’an 311300 |
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| Cite this article: |
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ZHOU Guo-Quan, CHEN Liang, NI Yong-Zhou 2006 Chin. Phys. Lett. 23 1180-1183 |
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Abstract According to the vectorial structure of non-paraxial electromagnetic beams and the method of stationary phase, the analytical TE and TM terms of non-paraxial linearly polarized Gaussian beam are presented in the far field. The influence of linearly polarized angle on the relative energy flux distributions of the whole beam and its TE and TM terms is studied. The beam spot of the TE term is perpendicular to the direction of linearly polarized angle, while that of the TM term coincides with the direction of linearly polarized angle. The whole beam spot is elliptical, and the long axis is located at the direction of linearly polarized angle. The relative energy flux distribution of the TE term is relatively centralized in the direction perpendicular to the linearly polarized angle. While that of the TM term is relatively centralized in the direction of linearly polarized angle. To obtain the isolated TM and TE terms, a polarizer should be put at the long and the short axis of the whole beam spot, respectively.
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| Keywords:
42.25.Bs
41.85.Ew
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Published: 01 May 2006
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| PACS: |
42.25.Bs
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(Wave propagation, transmission and absorption)
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41.85.Ew
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(Particle beam profile, beam intensity)
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