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Record Details

Record 8 of 735
Designer Infrared Filters using Stacked Metal Lattices
External Online Source: doi:10.1063/1.1579115
Author and Affiliation:
Smith, Howard A.(Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, United States)
Rebbert, M.(Naval Research Lab., Washington, DC, United States)
Sternberg, O.(Naval Research Lab., Washington, DC, United States)
Abstract: We have designed and fabricated infrared filters for use at wavelengths greater than or equal to 15 microns. Unlike conventional dielectric filters used at the short wavelengths, ours are made from stacked metal grids, spaced at a very small fraction of the performance wavelengths. The individual lattice layers are gold, the spacers are polyimide, and they are assembled using integrated circuit processing techniques; they resemble some metallic photonic band-gap structures. We simulate the filter performance accurately, including the coupling of the propagating, near-field electromagnetic modes, using computer aided design codes. We find no anomalous absorption. The geometrical parameters of the grids are easily altered in practice, allowing for the production of tuned filters with predictable useful transmission characteristics. Although developed for astronomical instrumentation, the filters arc broadly applicable in systems across infrared and terahertz bands.
Publication Date: May 26, 2003
Document ID:
20040182477
(Acquired Dec 13, 2004)
Subject Category: ASTRONOMY
Document Type: Journal Article
Publication Information: Applied Physics Letters (ISSN 0003-6951); Volume 82; No. 21; 3605-3607
Publisher Information: American Inst. of Physics, United States
Contract/Grant/Task Num: NAG5-7394
Financial Sponsor: NASA Goddard Space Flight Center; Greenbelt, MD, United States
Organization Source: Harvard-Smithsonian Center for Astrophysics; Cambridge, MA, United States
Description: 3p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: INFRARED FILTERS; ASTRONOMY; FABRICATION; POLYIMIDES; GOLD; COMPUTER AIDED DESIGN; INTEGRATED CIRCUITS
Availability Source: Other Sources
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