Volume 121, Number 5, March 2018
|Number of page(s)||5|
|Section||Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics|
|Published online||10 May 2018|
A succinct method to generate multi-type HCV beams with a spatial spiral varying retardation-plate
1 Institute of Plasma Physics, Hefei Institutes of Physical Sciences, Chinese Academy of Sciences Hefei 230031, China
2 Science Island Branch of Graduate School, University of Science and Technology of China - Hefei 230031, China
3 Institute of Applied Physics, Army Officer Academy - Hefei 230031, China
4 College of Liberal Arts and Sciences, National University of Defense Technology - Changsha, Hunan 410073, China
Received: 14 December 2017
Accepted: 10 April 2018
A simple novel and practical scheme is presented to generate high-power cylindrical vector (HCV) beams with a 36-segment spiral varying retardation-plate sandwiched between two quarter-wave plates (QWPs). Four kinds of HCV beams, such as radially polarized beam and azimuthally polarized beam, are formed by simply rotating two QWPs. A segmented spiral varying phase-plate with isotropy is used to modulate spatial phase distribution to generate in-phase HCV beams. The intensity distributions and polarizing properties of HCV beams are investigated and analyzed in detail. It is demonstrated experimentally that the system can effectively generate multi-type HCV beams with high purity up to 99%, and it can be manufactured as cylindrical vector beam converter commercially.
PACS: 42.25.Ja – Polarization / 42.15.Eq – Optical system design / 42.30.Rx – Phase retrieval
© EPLA, 2018
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