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Subwavelength mode profile customisation using functional materials

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Subwavelength mode profile customisation using functional materials. / Gratus, Jonathan; Kinsler, Paul; Letizia, Rosa; Boyd, Taylor.

In: Journal of Physics Communications, Vol. 1, No. 2, 025003, 06.09.2017.

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@article{8992785cd12a408b96f779027b74c8f1,
title = "Subwavelength mode profile customisation using functional materials",
abstract = "An ability to completely customize the mode profile in an electromagnetic waveguide would be a useful ability. Currently, the transverse mode profile in a waveguide might be varied, but this is usually a side effect of design constraints, or for control of dispersion. In contrast, here we show how to control the longitudinal (propagation direction) mode profile on a sub-wavelength scale, but without the need for active solutions such as synthesizing the shape by combining multiple Fourier harmonics. This is done by means of a customized permittivity variation that can be calculated either directly from the desired mode profile, or as inspired by e.g. the range of shapes generated by the Mathieu functions. For applications such as charged particle beam dynamics, requiring field profile shaping in free space, we show that it is possible to achieve this despite the need to cut a channel through the medium.",
author = "Jonathan Gratus and Paul Kinsler and Rosa Letizia and Taylor Boyd",
year = "2017",
month = sep
day = "6",
doi = "10.1088/2399-6528/aa81bb",
language = "English",
volume = "1",
journal = "Journal of Physics Communications",
issn = "2399-6528",
publisher = "IOP Science",
number = "2",

}

RIS

TY - JOUR

T1 - Subwavelength mode profile customisation using functional materials

AU - Gratus, Jonathan

AU - Kinsler, Paul

AU - Letizia, Rosa

AU - Boyd, Taylor

PY - 2017/9/6

Y1 - 2017/9/6

N2 - An ability to completely customize the mode profile in an electromagnetic waveguide would be a useful ability. Currently, the transverse mode profile in a waveguide might be varied, but this is usually a side effect of design constraints, or for control of dispersion. In contrast, here we show how to control the longitudinal (propagation direction) mode profile on a sub-wavelength scale, but without the need for active solutions such as synthesizing the shape by combining multiple Fourier harmonics. This is done by means of a customized permittivity variation that can be calculated either directly from the desired mode profile, or as inspired by e.g. the range of shapes generated by the Mathieu functions. For applications such as charged particle beam dynamics, requiring field profile shaping in free space, we show that it is possible to achieve this despite the need to cut a channel through the medium.

AB - An ability to completely customize the mode profile in an electromagnetic waveguide would be a useful ability. Currently, the transverse mode profile in a waveguide might be varied, but this is usually a side effect of design constraints, or for control of dispersion. In contrast, here we show how to control the longitudinal (propagation direction) mode profile on a sub-wavelength scale, but without the need for active solutions such as synthesizing the shape by combining multiple Fourier harmonics. This is done by means of a customized permittivity variation that can be calculated either directly from the desired mode profile, or as inspired by e.g. the range of shapes generated by the Mathieu functions. For applications such as charged particle beam dynamics, requiring field profile shaping in free space, we show that it is possible to achieve this despite the need to cut a channel through the medium.

U2 - 10.1088/2399-6528/aa81bb

DO - 10.1088/2399-6528/aa81bb

M3 - Journal article

VL - 1

JO - Journal of Physics Communications

JF - Journal of Physics Communications

SN - 2399-6528

IS - 2

M1 - 025003

ER -