A 350 micron array polarimeter using translational modulators

David T. Chuss, Dominic J. Benford, Christopher K Walker, S. Harvey Moseley, Giles Novak, Johannes G. Staguhn, Edward J. Wollack

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

We describe a polarimeter that will be a testbed for a novel polarization modulator. This modulator is composed of two modified Martin-Puplett interferometers in which the input polarization state is transformed by adjusting the phase delays between linear orthogonal polarizations in each of the two stages. This type of modulator represents a potential improvement over existing technology in the following three ways. First, these modulators can fully characterize the polarization state by measuring Stokes Q, U, and V. The characterization of V is especially useful as a diagnostic for systematic errors. Second, the Martin-Puplett modulators can be easily retuned to observe at multiple frequencies. Finally, the small translations required for modulation can be accomplished with fewer moving parts than the rotational motions in wave plate modulators, thus potentially leading to modulators with longer lifetimes than those currently employed in polarimeters. The next generation of polarimeters, designed for both the study of Galactic magnetic fields in the far-infrared and submillimeter and the measurement of the polarized component of the Cosmic Microwave Background, will need to incorporate modulators with these attributes. This prototype polarimeter will be a modified version of the Hertz polarimeter that had until recently been operating on the Caltech Submillimeter Observatory. After modification, Hertz will be moved to the Heinrich Hertz Telescope in Arizona. We will utilize dynamic scheduling to efficiently observe during the best fraction of weather at this site.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsA.F.M. Moorwood, M. Iye
Pages1450-1460
Number of pages11
Volume5492
EditionPART 3
DOIs
StatePublished - 2004
EventGround-based Instrumentation for Astronomy - Glasgow, United Kingdom
Duration: Jun 21 2004Jun 25 2004

Other

OtherGround-based Instrumentation for Astronomy
CountryUnited Kingdom
CityGlasgow
Period6/21/046/25/04

Fingerprint

Polarimeters
polarimeters
Modulators
modulators
Polarization
polarization
interstellar magnetic fields
Systematic errors
scheduling
Observatories
Testbeds
weather
Telescopes
systematic errors
Interferometers
observatories
interferometers
adjusting
Scheduling
Microwaves

Keywords

  • Astronomical Instrumentation
  • Submillimeter Polarimetery

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Chuss, D. T., Benford, D. J., Walker, C. K., Moseley, S. H., Novak, G., Staguhn, J. G., & Wollack, E. J. (2004). A 350 micron array polarimeter using translational modulators. In A. F. M. Moorwood, & M. Iye (Eds.), Proceedings of SPIE - The International Society for Optical Engineering (PART 3 ed., Vol. 5492, pp. 1450-1460) https://doi.org/10.1117/12.551382

A 350 micron array polarimeter using translational modulators. / Chuss, David T.; Benford, Dominic J.; Walker, Christopher K; Moseley, S. Harvey; Novak, Giles; Staguhn, Johannes G.; Wollack, Edward J.

Proceedings of SPIE - The International Society for Optical Engineering. ed. / A.F.M. Moorwood; M. Iye. Vol. 5492 PART 3. ed. 2004. p. 1450-1460.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Chuss, DT, Benford, DJ, Walker, CK, Moseley, SH, Novak, G, Staguhn, JG & Wollack, EJ 2004, A 350 micron array polarimeter using translational modulators. in AFM Moorwood & M Iye (eds), Proceedings of SPIE - The International Society for Optical Engineering. PART 3 edn, vol. 5492, pp. 1450-1460, Ground-based Instrumentation for Astronomy, Glasgow, United Kingdom, 6/21/04. https://doi.org/10.1117/12.551382
Chuss DT, Benford DJ, Walker CK, Moseley SH, Novak G, Staguhn JG et al. A 350 micron array polarimeter using translational modulators. In Moorwood AFM, Iye M, editors, Proceedings of SPIE - The International Society for Optical Engineering. PART 3 ed. Vol. 5492. 2004. p. 1450-1460 https://doi.org/10.1117/12.551382
Chuss, David T. ; Benford, Dominic J. ; Walker, Christopher K ; Moseley, S. Harvey ; Novak, Giles ; Staguhn, Johannes G. ; Wollack, Edward J. / A 350 micron array polarimeter using translational modulators. Proceedings of SPIE - The International Society for Optical Engineering. editor / A.F.M. Moorwood ; M. Iye. Vol. 5492 PART 3. ed. 2004. pp. 1450-1460
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