Magnetic-field tailoring of the terahertz polarization emitted from a spintronic sourceCitation formats

  • External authors:
  • Morgan Hibberd
  • Daniel Lake
  • NAB Johansson
  • S. P. Jamison

Standard

Magnetic-field tailoring of the terahertz polarization emitted from a spintronic source. / Hibberd, Morgan; Lake, Daniel; Johansson, NAB; Thomson, Thomas; Jamison, S. P.; Graham, Darren.

In: Applied Physics Letters, Vol. 114, 031101, 2019.

Research output: Contribution to journalArticle

Harvard

Hibberd, M, Lake, D, Johansson, NAB, Thomson, T, Jamison, SP & Graham, D 2019, 'Magnetic-field tailoring of the terahertz polarization emitted from a spintronic source' Applied Physics Letters, vol. 114, 031101. https://doi.org/10.1063/1.5055736

APA

Hibberd, M., Lake, D., Johansson, NAB., Thomson, T., Jamison, S. P., & Graham, D. (2019). Magnetic-field tailoring of the terahertz polarization emitted from a spintronic source. Applied Physics Letters, 114, [031101]. https://doi.org/10.1063/1.5055736

Vancouver

Author

Hibberd, Morgan ; Lake, Daniel ; Johansson, NAB ; Thomson, Thomas ; Jamison, S. P. ; Graham, Darren. / Magnetic-field tailoring of the terahertz polarization emitted from a spintronic source. In: Applied Physics Letters. 2019 ; Vol. 114.

Bibtex

@article{1a8dd9b0b9a745dab6955d12f70071f0,
title = "Magnetic-field tailoring of the terahertz polarization emitted from a spintronic source",
abstract = "We demonstrate a method to create arbitrary terahertz (THz) polarization profiles by exploiting the magnetic field dependent emission process of a spintronic source. As a proof-of-concept, we show that by applying a specific magnetic field pattern to the source that it is possible to generate a quadrupole-like THz polarization profile. Experimental measurements of the electric field at the focus of the THz beam revealed a polarity  flip in the transverse profile of the quadrupole-like mode with a resulting strong, on-axis longitudinal component of 17.7 kVcm-1. This represents an order of magnitude increase in the longitudinal component for the quadrupole-like profile compared to a linear polarization, showing an example of how magnetic field patterning of a spintronic source can be exploited to obtain desirable THz polarization properties. This unique ability to generate any desired THz polarization profile opens up possibilities for schemes such as rotatable polarization spectroscopy and for efficient mode coupling in various waveguide designs. Furthermore, the strong longitudinal fields that can be generated have applications in areas including intrasubband spectroscopy of semiconductors, non-diffraction limited THz imaging and particle-beam acceleration.",
author = "Morgan Hibberd and Daniel Lake and NAB Johansson and Thomas Thomson and Jamison, {S. P.} and Darren Graham",
year = "2019",
doi = "10.1063/1.5055736",
language = "English",
volume = "114",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "AIP Publishing",

}

RIS

TY - JOUR

T1 - Magnetic-field tailoring of the terahertz polarization emitted from a spintronic source

AU - Hibberd, Morgan

AU - Lake, Daniel

AU - Johansson, NAB

AU - Thomson, Thomas

AU - Jamison, S. P.

AU - Graham, Darren

PY - 2019

Y1 - 2019

N2 - We demonstrate a method to create arbitrary terahertz (THz) polarization profiles by exploiting the magnetic field dependent emission process of a spintronic source. As a proof-of-concept, we show that by applying a specific magnetic field pattern to the source that it is possible to generate a quadrupole-like THz polarization profile. Experimental measurements of the electric field at the focus of the THz beam revealed a polarity  flip in the transverse profile of the quadrupole-like mode with a resulting strong, on-axis longitudinal component of 17.7 kVcm-1. This represents an order of magnitude increase in the longitudinal component for the quadrupole-like profile compared to a linear polarization, showing an example of how magnetic field patterning of a spintronic source can be exploited to obtain desirable THz polarization properties. This unique ability to generate any desired THz polarization profile opens up possibilities for schemes such as rotatable polarization spectroscopy and for efficient mode coupling in various waveguide designs. Furthermore, the strong longitudinal fields that can be generated have applications in areas including intrasubband spectroscopy of semiconductors, non-diffraction limited THz imaging and particle-beam acceleration.

AB - We demonstrate a method to create arbitrary terahertz (THz) polarization profiles by exploiting the magnetic field dependent emission process of a spintronic source. As a proof-of-concept, we show that by applying a specific magnetic field pattern to the source that it is possible to generate a quadrupole-like THz polarization profile. Experimental measurements of the electric field at the focus of the THz beam revealed a polarity  flip in the transverse profile of the quadrupole-like mode with a resulting strong, on-axis longitudinal component of 17.7 kVcm-1. This represents an order of magnitude increase in the longitudinal component for the quadrupole-like profile compared to a linear polarization, showing an example of how magnetic field patterning of a spintronic source can be exploited to obtain desirable THz polarization properties. This unique ability to generate any desired THz polarization profile opens up possibilities for schemes such as rotatable polarization spectroscopy and for efficient mode coupling in various waveguide designs. Furthermore, the strong longitudinal fields that can be generated have applications in areas including intrasubband spectroscopy of semiconductors, non-diffraction limited THz imaging and particle-beam acceleration.

U2 - 10.1063/1.5055736

DO - 10.1063/1.5055736

M3 - Article

VL - 114

JO - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

M1 - 031101

ER -