The thermal sieve: A diffractive baffle that provides thermal isolation of a cryogenic optical system from an ambient temperature collimator

James H. Burge, Dae Wook Kim

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

1 Scopus citations

Abstract

We present the thermal sieve, which is a diffractive baffle that provides thermal isolation between an ambient collimator and a cryogenic optical system being measured. The baffle uses several parallel plates with holes in them. The holes are lined up to allow the collimated light to pass, but the view factor for thermal radiation is greatly reduced. A particular design is shown here that allows less than 0.25 W/m2 thermal transfer and degrades the test wavefront by only 3 nm rms.

Original languageEnglish (US)
Title of host publicationSpace Telescopes and Instrumentation 2012
Subtitle of host publicationOptical, Infrared, and Millimeter Wave
DOIs
StatePublished - Dec 1 2012
EventSpace Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave - Amsterdam, Netherlands
Duration: Jul 1 2012Jul 6 2012

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8442
ISSN (Print)0277-786X

Other

OtherSpace Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave
CountryNetherlands
CityAmsterdam
Period7/1/127/6/12

Keywords

  • Collimator
  • Cryogenic testing
  • Space optics

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Burge, J. H., & Kim, D. W. (2012). The thermal sieve: A diffractive baffle that provides thermal isolation of a cryogenic optical system from an ambient temperature collimator. In Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave [84421L] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 8442). https://doi.org/10.1117/12.927789