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Very Narrow Band Interference Filters

Published online by Cambridge University Press:  25 April 2016

J. V. Ramsay
J. V. Ramsay*
Affiliation:
Division of Physics, CSIRO, Sydney
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Extract

In solar physics a need exists for filters which have very narrow passbands, ~0.01 nm or less. While Lyot-Öhman birefringent filters have been used particularly for investigations at the Hα line, the limited availability of the raw materials, especially calcite, have usually restricted these filters to passbands of ~ 0.025 nm or more. A possible alternative type of filter consists of a number of Fabry-Perot interferometers mounted one behind the other.

Type
Contributions
Information
Publications of the Astronomical Society of Australia , Volume 1 , Issue 2 , November 1967 , pp. 66
Copyright
Copyright © Astronomical Society of Australia 1967

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References

1 Otte, G., J. Sci. Instrum., 42, 911 (1965).Google Scholar
2 Ramsay, J.V., Appl. Optics, 1, 411 (1962).CrossRefGoogle Scholar
3 Kobler, H., Proc. IRE Aust., 24, 677 (1963).Google Scholar
4 Ramsay, J. V., Appl. Optics, 5, 1297 (1967).Google Scholar
5 Steel, W. H., ‘Interferometry’, p. 120, University Press, Cambridge, 1967.Google Scholar
6 Ramsay, J. V., ‘Optical Imagery through Fabry-Perot Interferometers’. To be published.Google Scholar