Spectral characterisation of cooled filters for remote sensing
Hawkins, G. J., Seeley, J.S. and Hunneman, R. (1988) Spectral characterisation of cooled filters for remote sensing. In: Elliot, C. (ed.) Recent developments in infrared components and subsystems. Proceedings of SPIE (915). SPIE, pp. 71-78. ISBN 9780892529506
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The improvements obtained on cooling atmospheric remote-sensing instruments for space flight applications has promoted research in characterization of the necessary optical filters. By modelling the effects of temperature on the dispersive spectrum of some constituent thin film materials, the cooled performance can be simulated and compared. multilayer filter designs with the measured spectra from actual filters. Two actual filters are discussed, for the 7µm region, one a composite cut-on/cut-off design of 13% HBW and the other an integral narrowband design of 4% HBW.
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