Skip to Main Content
 

Global Search Box

 
 
 
 

Files

File List


case1232487119.pdf (9.36 MB)

ETD Abstract Container

Abstract Header

Characterization of the Polarization and Frequency Selective Bolometric Detector Architecture

Leong, Jonathan Ryan Kyoung Ho
http://rave.ohiolink.edu/etdc/view?acc_num=case1232487119

Abstract Details

2009, Doctor of Philosophy, Case Western Reserve University, Physics.
The Cosmic Microwave Background (CMB) has been a wonderful probe of fundamental physics and cosmology. In the future, we look towards using the polarization information encoded in the CMB for investigating the gravity waves generated by inflation. This is a daunting task as it requires orders of magnitude increases in sensitivity as well as close attention to systematic rejection and astrophysical foreground removal. We have characterized a novel detector architecture which is aimed at making these leaps towards gravity wave detection in the CMB. These detectors are called the Polarization and Frequency Selective Bolometers (PFSBs). They attempt to use all the available photon information incident on a single pixel by selecting out the two orthogonal polarizations and multiple frequency bands into separately stacked detectors in a smooth-walled waveguide. This approach is inherently multimoded and thus solves problems with downlink and readout throughput by catching more photons per detector at the higher frequencies where the number of detectors required is prohibitively large. We have found that the PFSB architecture requires the use of a square cross-section waveguide. A simulation we developed has illuminated the fact that the curved field lines of the higher order modes can be eliminated by degeneracies which exist only for a square guide and not a circular one. In the square guide configuration, the PFSBs show good band selection and polarization efficiency to a level of about 90% over the beam out to at least 20° from on-axis.
John Ruhl (Advisor)
Daniel Akerib (Committee Member)
Lawrence Krauss (Committee Member)
Ramanathan Sankaran (Committee Member)
216 p.
Astrophysics; Communication; Electrical Engineering; Electromagnetism; Engineering; Optics; Physics
cosmic microwave background radiation; bolometric detectors; multimode waveguide; polarization sensitive; frequency selective; PFSB; FSB; CMBPOL; inflation; primordial gravity waves; galaxy cluster; beam map; radiation pattern; antenna pattern

Recommended Citations

Citations

  • Leong, J. R. K. H. (2009). Characterization of the Polarization and Frequency Selective Bolometric Detector Architecture [Doctoral dissertation, Case Western Reserve University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=case1232487119

    APA Style (7th edition)

  • Leong, Jonathan. Characterization of the Polarization and Frequency Selective Bolometric Detector Architecture. 2009. Case Western Reserve University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=case1232487119.

    MLA Style (8th edition)

  • Leong, Jonathan. "Characterization of the Polarization and Frequency Selective Bolometric Detector Architecture." Doctoral dissertation, Case Western Reserve University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=case1232487119

    Chicago Manual of Style (17th edition)

case1232487119
1,241
© 2009, some rights reserved.Creative Commons License Characterization of the Polarization and Frequency Selective Bolometric Detector Architecture by Jonathan Ryan Kyoung Ho Leong is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. Based on a work at etd.ohiolink.edu.
This open access ETD is published by Case Western Reserve University School of Graduate Studies and OhioLINK.