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Applied Optics

Applied Optics


  • Vol. 33, Iss. 1 — Jan. 1, 1994
  • pp: 39–41

Far-infrared bandpass filters from perforated metal screens

P. G. Huggard, M. Meyringer, A. Schilz, K. Goller, and W. Prettl  »View Author Affiliations

Applied Optics, Vol. 33, Issue 1, pp. 39-41 (1994)

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Precision nickel printing screens are shown to be very useful as far-infrared bandpass filters. For a range of such regularly perforated sheets, transmission peaks of ~0.9 have been observed to lie at frequencies between 60 and 140 cm−1. We found that this value shows little degradation by cascading several screens, but the overall filter Q value may be increased from 2.7 to a value of ~ 6. These screens have considerable advantages over conventional far-infrared bandpass filters in terms of strength, optical characteristics, and cost.

© 1994 Optical Society of America

Original Manuscript: June 3, 1993
Published: January 1, 1994

P. G. Huggard, M. Meyringer, A. Schilz, K. Goller, and W. Prettl, "Far-infrared bandpass filters from perforated metal screens," Appl. Opt. 33, 39-41 (1994)

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