OSA's Digital Library

Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 47, Iss. 3 — Jan. 20, 2008
  • pp: 422–430

Design and initial performance of SHARP, a polarimeter for the SHARC-II camera at the Caltech Submillimeter Observatory

H. Li, C. D. Dowell, L. Kirby, G. Novak, and J. E. Vaillancourt  »View Author Affiliations


Applied Optics, Vol. 47, Issue 3, pp. 422-430 (2008)
http://dx.doi.org/10.1364/AO.47.000422


View Full Text Article

Enhanced HTML    Acrobat PDF (841 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

We have developed a foreoptics module that converts the Submillimeter High Angular Resolution Camera generation II (SHARC-II) camera at the Caltech Submillimeter Observatory into a sensitive imaging polarimeter at wavelengths of 350 and 450 μ m . We refer to this module as “SHARP.” SHARP splits the incident radiation into two orthogonally polarized beams that are then reimaged onto opposite ends of the 32 × 12 pixel detector array in SHARC-II. A rotating half-wave plate is used just upstream from the polarization-splitting optics. The effect of SHARP is to convert SHARC-II into a dual-beam 12 × 12 pixel polarimeter. A novel feature of SHARP's design is the use of a crossed grid in a submillimeter polarimeter. Here we describe the detailed optical design of SHARP and present results of tests carried out during our first few observing runs. At 350 μ m , the beam size (9 arc sec), throughput (75%), and instrumental polarization ( < 1 % ) are all very close to our design goals.

© 2008 Optical Society of America

OCIS Codes
(110.6770) Imaging systems : Telescopes
(350.1260) Other areas of optics : Astronomical optics
(350.1270) Other areas of optics : Astronomy and astrophysics

ToC Category:
Polarimetry

History
Original Manuscript: June 25, 2007
Revised Manuscript: October 29, 2007
Manuscript Accepted: October 31, 2007
Published: January 17, 2008

Citation
H. Li, C. D. Dowell, L. Kirby, G. Novak, and J. E. Vaillancourt, "Design and initial performance of SHARP, a polarimeter for the SHARC-II camera at the Caltech Submillimeter Observatory," Appl. Opt. 47, 422-430 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-3-422

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited