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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 33, Iss. 25 — Sep. 1, 1994
  • pp: 6046–6052

Resonant metal-mesh bandpass filters for the far infrared

D. W. Porterfield, J. L. Hesler, R. Densing, E. R. Mueller, T. W. Crowe, and R. M. Weikle, II  »View Author Affiliations


Applied Optics, Vol. 33, Issue 25, pp. 6046-6052 (1994)
http://dx.doi.org/10.1364/AO.33.006046


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Abstract

The spectral performance of freestanding resonant metal-mesh bandpass filters operating with center frequencies ranging from 585 GHz to 2.1 THz is presented. These filters are made up of a 12-μm-thick copper film with an array of cross-shaped apertures that fill a circular area with a 50-mm diameter. The filters exhibit power transmission in the range 97–100% at their respective center frequencies and stop-band rejection in excess of 18 dB. The theoretically predicted nondiffracting properties of the meshes are experimentally verified through high-resolution beam mapping. Scalability of the filter spectra with mesh dimensions is demonstrated over a wide spectral range. Several modeling methods are considered, and results from the models are shown.

© 1994 Optical Society of America

History
Original Manuscript: October 15, 1993
Revised Manuscript: February 2, 1994
Published: September 1, 1994

Citation
D. W. Porterfield, J. L. Hesler, R. Densing, E. R. Mueller, T. W. Crowe, and R. M. Weikle, "Resonant metal-mesh bandpass filters for the far infrared," Appl. Opt. 33, 6046-6052 (1994)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-33-25-6046

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