Abstract

Studies of peak transmission drift in narrow-band interference filters have shown that there exist two mechanisms that cause drift toward shorter wavelengths. One is dependent on the thermal history of the filter and is discussed in Part 1 of this paper. The other is dependent on the exposure of the filter to radiation. For ZnS–cryolite filters of the design [(HL)⁴H⁸(LH)⁴L]³L⁻¹, it is experimentally demonstrated that the filters are most sensitive to radiation in a 100-Å band centered at approximately 3900 Å. The drift rate in the focal plane of an f/20 solar image is approximately 3 Å/100 h of exposure. Further, it is also shown by model calculations that the observed radiation-induced drift is consistent with the hypothesis that the optical thickness of ZnS decreases in proportion to the radiant energy absorbed.

© 1974 Optical Society of America

Drift in Interference Filters. Part 1

Alan M. Title, Thomas P. Pope, and John P. Andelin
Appl. Opt. 13(11) 2675-2679 (1974)

Irradiation-induced switch power drift in optically bistable nonlinear interference filters at 514 and 830 nm

Robert J. Campbell, Gerald S. Buller, J. Gordon H. Mathew, S. Desmond Smith, and Andrew C. Walker
Appl. Opt. 29(5) 638-643 (1990)

Interference Filters for the Ultraviolet and the Surface Plasmon of Aluminum

Eberhard Spiller
Appl. Opt. 13(5) 1209-1215 (1974)

Circumsolar Radiation as a Measure of the Turbidity of the Atmosphere. Part 2

Anders Angstrom
Appl. Opt. 13(6) 1477-1480 (1974)

Far-infrared Filters Utilizing Small Particle Scattering and Antireflection Coatings

K. R. Armstrong and F. J. Low
Appl. Opt. 13(2) 425-430 (1974)