Design of a hybrid division of aperture/division of focal plane polarimeter

Wei Hua, J. Scott Tyo, Theodore S. Turner

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

3 Citations (Scopus)

Abstract

There are many acceptable ways to construct an imaging Polarimeter, each with its own benefits and drawbacks. The most common systems involve rotating elements, but use of these systems puts limitations on the dynamic nature of the scene. Division of Aperture (DoAP) and Division of Amplitude Polarimeters (DoAmP) solve the temporal synchronization issue by using multiple light paths, each of which has its own set of polarization optics. These systems can provide real-time imagery, but there are significant challenges surrounding optomechanical alignment and sensitivity to vibrations. Division of Focal Plane devices (DoFP) use an integrated array of micropolarizers to solve the temporal and mechanical alignment issues, but suffer from exactly 1 pixel of IFOV error that cannot be compensated for at the full resolution of the system. Recently we presented a concept that creates a highly parallel array of non-imaging DoAP devices. The design uses two microlens arrays to relay the image at an intermediate focal plane through a microgrid polarizer. The microlenses are configured such that each lens in the first array feeds four lenses in the second array, so as to create a non-imaging DoAP Polarimeter. Our previous work was only a conceptual design. In this paper, we will present a design and ray-tracing analysis of a proposed system. We quantify the principal drawbacks of vignetting and crosstalk, and give expected performance parameters of a final device.

Original languageEnglish
Title of host publicationPolarization Science and Remote Sensing III
PublisherSPIE - International Society for Optical Engineering
ISBN (Print)9780819468307
DOIs
Publication statusPublished - 2007
Externally publishedYes
EventPolarization Science and Remote Sensing III 2007 - San Diego, United States of America
Duration: 29 Aug 200730 Aug 2007
https://www.spiedigitallibrary.org/conference-proceedings-of-spie/6682.toc

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume6682
ISSN (Print)0277-786X

Conference

ConferencePolarization Science and Remote Sensing III 2007
Country/TerritoryUnited States of America
CitySan Diego
Period29/08/0730/08/07
Internet address

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