
Proceedings Paper
Mid-infrared filters for astronomical and remote sensing instrumentationFormat | Member Price | Non-Member Price |
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Paper Abstract
As improvements to the optical design of spectrometer and radiometer instruments evolve with advances in detector
sensitivity, use of focal plane detector arrays and innovations in adaptive optics for large high altitude telescopes, interest
in mid-infrared astronomy and remote sensing applications have been areas of progressive research in recent years. This
research has promoted a number of developments in infrared coating performance, particularly by placing increased
demands on the spectral imaging requirements of filters to precisely isolate radiation between discrete wavebands and
improve photometric accuracy. The spectral design and construction of multilayer filters to accommodate these
developments has subsequently been an area of challenging thin-film research, to achieve high spectral positioning
accuracy, environmental durability and aging stability at cryogenic temperatures, whilst maximizing the far-infrared
performance. In this paper we examine the design and fabrication of interference filters in instruments that utilize the
mid-infrared N-band (6-15 μm) and Q-band (16-28 μm) atmospheric windows, together with a rationale for the selection
of materials, deposition process, spectral measurements and assessment of environmental durability performance.
Paper Details
Date Published: 25 September 2008
PDF: 15 pages
Proc. SPIE 7101, Advances in Optical Thin Films III, 710114 (25 September 2008); doi: 10.1117/12.796635
Published in SPIE Proceedings Vol. 7101:
Advances in Optical Thin Films III
Norbert Kaiser; Michel Lequime; H. Angus Macleod, Editor(s)
PDF: 15 pages
Proc. SPIE 7101, Advances in Optical Thin Films III, 710114 (25 September 2008); doi: 10.1117/12.796635
Show Author Affiliations
Gary Hawkins, The Univ. of Reading (United Kingdom)
Richard Sherwood, The Univ. of Reading (United Kingdom)
Richard Sherwood, The Univ. of Reading (United Kingdom)
Karim Djotni, The Univ. of Reading (United Kingdom)
Published in SPIE Proceedings Vol. 7101:
Advances in Optical Thin Films III
Norbert Kaiser; Michel Lequime; H. Angus Macleod, Editor(s)
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