Manipulation of vector beam polarization with geometric metasurfaces

Research output: Contribution to journalArticle

Authors

  • Qinghua Guo
  • Christian Schlickriede
  • Dongyang Wang
  • Yuanjiang Xiang
  • Thomas Zentgraf

Colleges, School and Institutes

External organisations

  • Department of Physics, University of Paderborn
  • SZU-NUS Collaborative Innovation Centre for Optoelectronic Science & Technology, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University
  • Center for Terahertz Waves and College of Precision Instrument and Optoelectronics Engineering, Tianjin University
  • University of Birmingham, UK.

Abstract

Describing a class of beams with space-variant polarization, vector beams find many applications in both classical and quantum optics. However, simultaneous manipulation of its space-dependent polarization states is still a challenge with a single optical element. Here we demonstrate polarization modulation of a vector field by employing a plasmonic metasurface exhibiting strong and controllable optical activity. By changing the lateral phase shift between two reflective metasurface supercells, the rotation angle of a linear polarized light can be continuously tuned from zero to π with a high efficiency. As the optical activity of our metasurface devices only depends on geometrical phase, the metasurfaces can simultaneously modulate the rotation angle of a vector beam regardless of its space-variant polarization distribution. Our work provides a high efficient method in manipulating the polarization state of vector beams, especially with metasurface in a compact space, which presents great potential in research fields involving vector beams.

Details

Original languageEnglish
Pages (from-to)14300-14307
JournalOptics Express
Volume25
Issue number13
Early online date13 Jun 2017
Publication statusPublished - 26 Jun 2017