We review a number of technologies that are candidates for active polarization modulators for CMBPol. The technologies are appropriate for instruments that use bolometric detectors and include birefringent crystal-based and metal-mesh-based half-wave plates, variable phase polarization modulator, Faraday rotator, and photolithographed modulators. We also give a current account of the status of millimeter-wave orthomode transducers.
|Original language||English (US)|
|Journal||Journal of Physics: Conference Series|
|State||Published - Jun 29 2009|
|Event||2008 Conference on Technology Development for a Cosmic Microwave Background Probe of Inflation - Boulder, United States|
Duration: Aug 25 2008 → Aug 28 2008
Bibliographical noteFunding Information:
This project has been supported by the Caltech President’s Fund and by the University of California, San Diego and NSF PECASE Award # AST-0548262. Evan Bierman assisted in the design, development, and fabrication of the FRMs used in BICEP. Thomas Renbarger and Evan Bierman provided figures used in this paper. Ed Wollack and Neal Erickson provided many useful insights as well as assisting with design considerations. Helpful comments from Jamie Bock, Darren Dowell, William Jones, Chao-lin Kuo, Andrew Lange, and Ki Won Yoon are gratefully acknowledged.
© 2009 IOP Publishing Ltd.