Demonstration of the broadband half-wave plate using the nine-layer sapphire for the CMB polarization experiment

Kunimoto Komatsu; Tomotake Matsumura; Hiroaki Imada; Hirokazu Ishino; Nobuhiko Katayama; Yuki Sakurai

Demonstration of the broadband half-wave plate using the nine-layer sapphire for the CMB polarization experiment

Kunimoto Komatsu, Tomotake Matsumura, Hiroaki Imada, Hirokazu Ishino, Nobuhiko Katayama, Yuki Sakurai

Research output: Contribution to journal › Article › peer-review

Abstract

We report the development of the achromatic half-wave plate (AHWP) at millimeter wave for cosmic microwave background polarization experiments. We fabricate an AHWP consisting of nine A-cut sapphire plates based on the Pancharatnam recipe to cover a wide frequency range. The modulation efficiency and the phase are measured in a frequency range of 33 to 260 GHz with incident angles up to 10 degrees. We find the measurements at room temperature are in good agreement with the predictions. This is the most broadband demonstration of an AHWP at millimeter wave.

Original language	English
Journal	Journal of Astronomical Telescopes, Instruments, and Systems
Volume	5
Issue number	4
Publication status	Published - 2020

Keywords

Achromatic half-wave plate
B-mode
CMB polarization
Millimeter wave
Polarimetry
Space mission

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Control and Systems Engineering
Instrumentation
Astronomy and Astrophysics
Mechanical Engineering
Space and Planetary Science

Cite this

Demonstration of the broadband half-wave plate using the nine-layer sapphire for the CMB polarization experiment. / Komatsu, Kunimoto; Matsumura, Tomotake; Imada, Hiroaki; Ishino, Hirokazu; Katayama, Nobuhiko; Sakurai, Yuki.

In: Journal of Astronomical Telescopes, Instruments, and Systems, Vol. 5, No. 4, 2020.

Research output: Contribution to journal › Article › peer-review

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title = "Demonstration of the broadband half-wave plate using the nine-layer sapphire for the CMB polarization experiment",

abstract = "We report the development of the achromatic half-wave plate (AHWP) at millimeter wave for cosmic microwave background polarization experiments. We fabricate an AHWP consisting of nine A-cut sapphire plates based on the Pancharatnam recipe to cover a wide frequency range. The modulation efficiency and the phase are measured in a frequency range of 33 to 260 GHz with incident angles up to 10 degrees. We find the measurements at room temperature are in good agreement with the predictions. This is the most broadband demonstration of an AHWP at millimeter wave.",

keywords = "Achromatic half-wave plate, B-mode, CMB polarization, Millimeter wave, Polarimetry, Space mission",

author = "Kunimoto Komatsu and Tomotake Matsumura and Hiroaki Imada and Hirokazu Ishino and Nobuhiko Katayama and Yuki Sakurai",

note = "Funding Information: This paper based on a SPIE conference proceedings paper.30 This work is supported by JSPS KAKENHI Grant Number JP17H01125, JP15H05441, JP15H05891, JP17K14272, JP18J20148 and JSPS Core-to-Core Program, A. Advanced Research Networks, and the World Premier International Research Center Initiative (WPI Initiative), MEXT, Japan. We would like to thank Dr. Samantha Stever for editorial suggestions to this paper. Publisher Copyright: {\textcopyright} 2020 Royal Society of Chemistry. All rights reserved.",

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AU - Komatsu, Kunimoto

AU - Matsumura, Tomotake

AU - Imada, Hiroaki

AU - Ishino, Hirokazu

AU - Katayama, Nobuhiko

AU - Sakurai, Yuki

N1 - Funding Information: This paper based on a SPIE conference proceedings paper.30 This work is supported by JSPS KAKENHI Grant Number JP17H01125, JP15H05441, JP15H05891, JP17K14272, JP18J20148 and JSPS Core-to-Core Program, A. Advanced Research Networks, and the World Premier International Research Center Initiative (WPI Initiative), MEXT, Japan. We would like to thank Dr. Samantha Stever for editorial suggestions to this paper. Publisher Copyright: © 2020 Royal Society of Chemistry. All rights reserved.

PY - 2020

Y1 - 2020

N2 - We report the development of the achromatic half-wave plate (AHWP) at millimeter wave for cosmic microwave background polarization experiments. We fabricate an AHWP consisting of nine A-cut sapphire plates based on the Pancharatnam recipe to cover a wide frequency range. The modulation efficiency and the phase are measured in a frequency range of 33 to 260 GHz with incident angles up to 10 degrees. We find the measurements at room temperature are in good agreement with the predictions. This is the most broadband demonstration of an AHWP at millimeter wave.

AB - We report the development of the achromatic half-wave plate (AHWP) at millimeter wave for cosmic microwave background polarization experiments. We fabricate an AHWP consisting of nine A-cut sapphire plates based on the Pancharatnam recipe to cover a wide frequency range. The modulation efficiency and the phase are measured in a frequency range of 33 to 260 GHz with incident angles up to 10 degrees. We find the measurements at room temperature are in good agreement with the predictions. This is the most broadband demonstration of an AHWP at millimeter wave.

KW - Achromatic half-wave plate

KW - B-mode

KW - CMB polarization

KW - Millimeter wave

KW - Polarimetry

KW - Space mission

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IS - 4

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Demonstration of the broadband half-wave plate using the nine-layer sapphire for the CMB polarization experiment

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Keywords

ASJC Scopus subject areas

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