中国物理B ›› 2012, Vol. 21 ›› Issue (2): 24201-024201.doi: 10.1088/1674-1056/21/2/024201

• GENERAL • 上一篇    下一篇

陈子阳,蒲继雄   

  • 收稿日期:2011-03-12 修回日期:2011-08-15 出版日期:2012-01-30 发布日期:2012-01-30
  • 通讯作者: 蒲继雄,jixiong@hqu.edu.cn E-mail:jixiong@hqu.edu.cn

Propagation dynamics and experimental observation of quadratic vortex beam

Chen Zi-Yang(陈子阳) and Pu Ji-Xiong(蒲继雄)†   

  1. College of Information Science & Engineering, Institute of Optics & Photonics, Huaqiao University, Xiamen 361021, China
  • Received:2011-03-12 Revised:2011-08-15 Online:2012-01-30 Published:2012-01-30
  • Contact: Pu Ji-Xiong,jixiong@hqu.edu.cn E-mail:jixiong@hqu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 61178015), the Nurturing Program of National Nature Science Foundation of China (Grant No. JB-ZR1126), and the Open Research Fund of State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences (Grant No. SKL ST200912).

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Abstract: The concept of a quadratic vortex beam is proposed, in which phase term of the beam is given by exp(i mθ2). The phase of the quadratic vortex beam increases with azimuthal angle nonlinearly. This change in phase produces several unexpected effects. Unlike the circularly symmetric beam spot of normal vortex beams, the intensity distribution of the quadratic vortex beam is shown to be asymmetric. The phase singularities will shift in the transverse beam plane on propagation.

Key words: vortex beam, phase singularity, propagation dynamics

中图分类号:  (Wave propagation, transmission and absorption)

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