A full vectorial mapping of nanophotonic light fields

B. le Feber; J. E. Sipe; M. Wulf; L. Kuipers; N. Rotenberg

doi:10.1038/s41377-019-0124-3

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A full vectorial mapping of nanophotonic light fields

Letters

- A full vectorial mapping of nanophotonic light fields
- Light: Science & Applications Vol. 8, Issue 2, Pages: 205-211(2019)
- Affiliations：
  
  1.Optical Materials Engineering Laboratory, ETH Zürich, 8092, Zurich, Switzerland
  2.Center for Nanophotonics, AMOLF, Science Park 104, 1098 XG, Amsterdam, The Netherlands
  3.Institute for Optical Sciences, University of Toronto, 60 St. George Street, Ontario, M5S 1A7, Canada
  4.Institute of Science and Technology Austria, Am Campus 1, 3400, Klosterneuburg, Austria
  5.Kavli Institute of Nanoscience, Department of Quantum Nanoscience, Delft University of Technology, Lorentzweg 1, 2628 CJ, Delft, The Netherlands
  6.Niels Bohr Institute and Center for Hybrid Quantum Networks, University of Copenhagen, Blegdamsvej 17, DK-2100, Copenhagen, Denmark
- Author bio：
  
  B. Feber (boris.le.feber@prodrive-technologies.com)
- Funds：
- DOI：10.1038/s41377-019-0124-3
  CLC：
- Published：2019，
  
  Published Online：06 March 2019，
  
  Received：02 June 2018，
  
  Revised：17 December 2018，
  
  Accepted：07 January 2019
- Accepted：
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Feber, B. L. et al. A full vectorial mapping of nanophotonic light fields. Light: Science & Applications, 8, 205-211 (2019).
DOI：

Feber, B. L. et al. A full vectorial mapping of nanophotonic light fields. Light: Science & Applications, 8, 205-211 (2019). DOI： 10.1038/s41377-019-0124-3.

摘要

Abstract

Light is a union of electric and magnetic fields

and nowhere is the complex relationship between these fields more evident than in the near fields of nanophotonic structures. There

complicated electric and magnetic fields varying over subwavelength scales are generally present

which results in photonic phenomena such as extraordinary optical momentum

superchiral fields

and a complex spatial evolution of optical singularities. An understanding of such phenomena requires nanoscale measurements of the complete optical field vector. Although the sensitivity of near-field scanning optical microscopy to the complete electromagnetic field was recently demonstrated

a separation of different components required a priori knowledge of the sample. Here

we introduce a robust algorithm that can disentangle all six electric and magnetic field components from a single near-field measurement without any numerical modeling of the structure. As examples

we unravel the fields of two prototypical nanophotonic structures: a photonic crystal waveguide and a plasmonic nanowire. These results pave the way for new studies of complex photonic phenomena at the nanoscale and for the design of structures that optimize their optical behavior.

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references

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