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  • Chinese Optics Letters
  • Vol. 15,
  • Issue 3,
  • pp. 030007-
  • (2017)

Flexible generation of femtosecond cylindrical vector beams (Invited Paper)

Yuquan Zhang, Xiujie Dou, Yong Yang, Chen Xie, Jing Bu, Changjun Min, and Xiaocong Yuan

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Abstract

Femtosecond (fs) cylindrical vector beams (CVBs) have found use in many applications in recent years. However, the existing rigid generation methods seriously limit its development. Here, we propose a flexible method for generating fs-CVBs with arbitrary polarization order by employing half wave plates and vortex retarders. The polarization state, autocorrelation width, pulse width, and spectrum features of the input and generated CVB pulses are measured and compared. The results verify that the generated CVBs remain in the fs regime with no appreciable temporal distortion, and the energy conversion efficiency can reach as high as 96.5%, even for a third-order beam. As a flexible way to generate fs-CVBs, this method will have great significance for many applications.

© 2017 Chinese Laser Press

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