Variable-delay polarization modulators for cryogenic millimeter-wave applications

被引：9

作者：

Chuss, D. T. ^{[1
]}

Eimer, J. R. ^{[2
]}

Fixsen, D. J. ^{[1
]}

Hinderks, J. ^{[1
]}

Kogut, A. J. ^{[1
]}

Lazear, J. ^{[2
]}

Mirel, P. ^{[1
]}

Switzer, E. ^{[1
]}

Voellmer, G. M. ^{[1
]}

Wollack, E. J. ^{[1
]}

机构：

[1] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[2] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2014年 / 85卷 / 06期

关键词：

GRIDS;

D O I：

10.1063/1.4879499

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We describe the design, construction, and initial validation of the variable-delay polarization modulator (VPM) designed for the PIPER cosmic microwave background polarimeter. The VPM modulates between linear and circular polarization by introducing a variable phase delay between orthogonal linear polarizations. Each VPM has a diameter of 39 cm and is engineered to operate in a cryogenic environment (1.5 K). We describe the mechanical design and performance of the kinematic double-blade flexure and drive mechanism along with the construction of the high precision wire grid polarizers. (C) 2014 AIP Publishing LLC.

引用

页数：6

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