• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
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Volume 22 Issue 4
Aug.  2009
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Article Contents
JI Guangming, XU Bicai, JI Xiaoling. Far-Field Divergence Angle and Directionality of One Dimensional Off-Axis Gaussian Beams[J]. Journal of Southwest Jiaotong University, 2009, 22(4): 615-619.
Citation: JI Guangming, XU Bicai, JI Xiaoling. Far-Field Divergence Angle and Directionality of One Dimensional Off-Axis Gaussian Beams[J]. Journal of Southwest Jiaotong University, 2009, 22(4): 615-619.

Far-Field Divergence Angle and Directionality of One Dimensional Off-Axis Gaussian Beams

  • Received Date: 13 Jan 2008
  • Based on the Huygens-Fresnel principle,the analytical expression for the far-field divergence angle of one-dimensional off-axis Gaussian beams propagating in free space was derived using the integral transform technique to study the properties of the far-field divergence angle and the directionality.The results show that the far-field divergence angle of an one-dimensional off-axis Gaussian beam decreases with an increase in beam number and a decrease in relative separation distance between subbeams,it varies a little when the beam number and the relative separation distances between subbeams are large enough,and under a certain condition,an one-dimensional off-axis Gaussian beam has the same directionality as an one Gaussian beam does.

     

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