Polarizer design for millimeter-wave plasma diagnostics

Frank Leipold; Mirko Salewski; Asger Schou Jacobsen; Martin Jessen; Søren Bang Korsholm; Poul Michelsen; Stefan Kragh Nielsen; Morten Stejner Pedersen

doi:10.1063/1.4816724

Polarizer design for millimeter-wave plasma diagnostics

Frank Leipold, Mirko Salewski, Asger Schou Jacobsen, Martin Jessen, Søren Bang Korsholm, Poul Michelsen, Stefan Kragh Nielsen, Morten Stejner Pedersen

Research output: Contribution to journal › Journal article › Research › peer-review

604 Downloads (Orbit)

Abstract

Radiation from magnetized plasmas is in general elliptically polarized. In order to convert the elliptical polarization to linear polarization, mirrors with grooved surfaces are currently employed in our collective Thomson scattering diagnostic at ASDEX Upgrade. If these mirrors can be substituted by birefringent windows, the microwave receivers can be designed to be more compact at lower cost. Sapphire windows (a-cut) as well as grooved high density polyethylene windows can serve this purpose. The sapphire window can be designed such that the calculated transmission of the wave energy is better than 99%, and that of the high density polyethylene can be better than 97%.

Original language	English
Journal	Review of Scientific Instruments
Volume	84
Issue number	8
Pages (from-to)	084701
ISSN	0034-6748
DOIs	https://doi.org/10.1063/1.4816724
Publication status	Published - 2013

Bibliographical note

Access to Document

10.1063/1.4816724

RevSciInstrum 84 084701Final published version, 832 KB

OpenUrl availability

Full text

Cite this

@article{c2f29c28e9404928b4b49596b89d7bd0,

title = "Polarizer design for millimeter-wave plasma diagnostics",

abstract = "Radiation from magnetized plasmas is in general elliptically polarized. In order to convert the elliptical polarization to linear polarization, mirrors with grooved surfaces are currently employed in our collective Thomson scattering diagnostic at ASDEX Upgrade. If these mirrors can be substituted by birefringent windows, the microwave receivers can be designed to be more compact at lower cost. Sapphire windows (a-cut) as well as grooved high density polyethylene windows can serve this purpose. The sapphire window can be designed such that the calculated transmission of the wave energy is better than 99%, and that of the high density polyethylene can be better than 97%.",

author = "Frank Leipold and Mirko Salewski and Jacobsen, {Asger Schou} and Martin Jessen and Korsholm, {S{\o}ren Bang} and Poul Michelsen and Nielsen, {Stefan Kragh} and {Stejner Pedersen}, Morten",

note = "{\textcopyright} 2013 AIP Publishing LLC",

year = "2013",

doi = "10.1063/1.4816724",

language = "English",

volume = "84",

pages = "084701",

journal = "Review of Scientific Instruments",

issn = "0034-6748",

publisher = "American Institute of Physics",

number = "8",

}

TY - JOUR

T1 - Polarizer design for millimeter-wave plasma diagnostics

AU - Leipold, Frank

AU - Salewski, Mirko

AU - Jacobsen, Asger Schou

AU - Jessen, Martin

AU - Korsholm, Søren Bang

AU - Michelsen, Poul

AU - Nielsen, Stefan Kragh

AU - Stejner Pedersen, Morten

PY - 2013

Y1 - 2013

N2 - Radiation from magnetized plasmas is in general elliptically polarized. In order to convert the elliptical polarization to linear polarization, mirrors with grooved surfaces are currently employed in our collective Thomson scattering diagnostic at ASDEX Upgrade. If these mirrors can be substituted by birefringent windows, the microwave receivers can be designed to be more compact at lower cost. Sapphire windows (a-cut) as well as grooved high density polyethylene windows can serve this purpose. The sapphire window can be designed such that the calculated transmission of the wave energy is better than 99%, and that of the high density polyethylene can be better than 97%.

AB - Radiation from magnetized plasmas is in general elliptically polarized. In order to convert the elliptical polarization to linear polarization, mirrors with grooved surfaces are currently employed in our collective Thomson scattering diagnostic at ASDEX Upgrade. If these mirrors can be substituted by birefringent windows, the microwave receivers can be designed to be more compact at lower cost. Sapphire windows (a-cut) as well as grooved high density polyethylene windows can serve this purpose. The sapphire window can be designed such that the calculated transmission of the wave energy is better than 99%, and that of the high density polyethylene can be better than 97%.

U2 - 10.1063/1.4816724

DO - 10.1063/1.4816724

M3 - Journal article

C2 - 24007082

SN - 0034-6748

VL - 84

SP - 084701

JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

IS - 8

ER -

Polarizer design for millimeter-wave plasma diagnostics

Abstract

Bibliographical note

Access to Document

OpenUrl availability

Fingerprint

Cite this