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 Citation (Scopus)

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 publicationProceedings of SPIE - The International Society for Optical Engineering
Volume8442
DOIs
StatePublished - 2012
EventSpace Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave - Amsterdam, Netherlands
Duration: Jul 1 2012Jul 6 2012

Other

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

Fingerprint

Baffle
sieves
baffles
Sieves
Sieve
collimators
Optical systems
Optical System
Cryogenics
ambient temperature
Isolation
cryogenics
isolation
thermal radiation
parallel plates
Thermal Radiation
Heat radiation
Wavefronts
Wave Front
Temperature

Keywords

  • Collimator
  • Cryogenic testing
  • Space optics

ASJC Scopus subject areas

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

Cite this

The thermal sieve : A diffractive baffle that provides thermal isolation of a cryogenic optical system from an ambient temperature collimator. / Burge, James H; Kim, Dae Wook.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8442 2012. 84421L.

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

Burge, JH & Kim, DW 2012, The thermal sieve: A diffractive baffle that provides thermal isolation of a cryogenic optical system from an ambient temperature collimator. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 8442, 84421L, Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave, Amsterdam, Netherlands, 7/1/12. https://doi.org/10.1117/12.927789
Burge, James H ; Kim, Dae Wook. / The thermal sieve : A diffractive baffle that provides thermal isolation of a cryogenic optical system from an ambient temperature collimator. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8442 2012.
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