Optical force rectifiers based on PT-symmetric metasurfaces Articles uri icon

publication date

  • May 2018

start page

  • 1

issue

  • 19 (195420)

volume

  • 97

International Standard Serial Number (ISSN)

  • 2469-9950

Electronic International Standard Serial Number (EISSN)

  • 2469-9969

abstract

  • We introduce here the concept of optical force rectifier based on parity-time symmetric metasurfaces. Directly linked to the properties of non-Hermitian systems engineered by balanced loss and gain constituents, we show that light can exert asymmetric pulling or pushing forces on metasurfaces depending on the direction of the impinging light. This generates a complete force rectification in the vicinity of the exceptional point. Our findings have the potential to spark the design of applications in optical manipulation where the forces, strictly speaking, act unidirectionally.

keywords

  • Electromagnetic field calculations
    Metamaterials