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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 42, Iss. 25 — Sep. 1, 2003
  • pp: 5009–5016

Predicting the response of a submillimeter bolometer to cosmic rays

Adam L. Woodcraft, Rashmi V. Sudiwala, Peter A. R. Ade, Matthew J. Griffin, Elley Wakui, Ravinder S. Bhatia, Andrew E. Lange, James J. Bock, Anthony D. Turner, Minhee H. Yun, and Jeffrey W. Beeman  »View Author Affiliations


Applied Optics, Vol. 42, Issue 25, pp. 5009-5016 (2003)
http://dx.doi.org/10.1364/AO.42.005009


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Abstract

Bolometers designed to detect submillimeter radiation also respond to cosmic, gamma, and x rays. Because detectors cannot be fully shielded from such energy sources, it is necessary to understand the effect of a photon or cosmic-ray particle being absorbed. The resulting signal (known as a glitch) can then be removed from raw data. We present measurements using an Americium-241 gamma radiation source to irradiate a prototype bolometer for the High Frequency Instrument in the Planck Surveyor satellite. Our measurements showed no variation in response depending on where the radiation was absorbed, demonstrating that the bolometer absorber and thermistor thermalize quickly. The bolometer has previously been fully characterized both electrically and optically. We find that using optically measured time constants underestimates the time taken for the detector to recover from a radiation absorption event. However, a full thermal model for the bolometer, with parameters taken from electrical and optical measurements, provides accurate time constants. Slight deviations from the model were seen at high energies; these can be accounted for by use of an extended model.

© 2003 Optical Society of America

OCIS Codes
(040.0040) Detectors : Detectors
(040.3060) Detectors : Infrared
(040.7480) Detectors : X-rays, soft x-rays, extreme ultraviolet (EUV)

History
Original Manuscript: January 16, 2003
Revised Manuscript: May 9, 2003
Published: September 1, 2003

Citation
Adam L. Woodcraft, Rashmi V. Sudiwala, Peter A. R. Ade, Matthew J. Griffin, Elley Wakui, Ravinder S. Bhatia, Andrew E. Lange, James J. Bock, Anthony D. Turner, Minhee H. Yun, and Jeffrey W. Beeman, "Predicting the response of a submillimeter bolometer to cosmic rays," Appl. Opt. 42, 5009-5016 (2003)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-42-25-5009


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