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Abbas, M. M.; Mumma, M. J.; Kostiuk, T.; Buhl, D. |
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Title |
Sensitivity limits of an infrared heterodyne spectrometer for astrophysical applications: errata |
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1977 |
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Applied Optics |
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Appl. Opt. |
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16 |
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11 |
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2793 |
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0003-6935 |
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459 |
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Author |
Benford, Dominic J.; Gaidis, Michael C.; Kooi, Jacob W. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Optical properties of Zitex in the infrared to submillimeter |
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Journal Article |
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2003 |
Publication |
Applied Optics |
Abbreviated Journal |
Appl. Opt. |
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42 |
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25 |
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5118 |
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0003-6935 |
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440 |
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Author |
González, Francisco Javier; Alda, Javier; Ilic, Bojan; Boreman, Glenn D. |
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Title |
Infrared Antennas Coupled to Lithographic Fresnel Zone Plate Lenses |
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Journal Article |
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2004 |
Publication |
Applied Optics |
Abbreviated Journal |
Appl. Opt. |
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43 |
Issue |
33 |
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6067-6073 |
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optical antennas |
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Abstract |
Several designs for Fresnel zone plate lenses (FZPLs) to be used in conjunction with antenna-coupled infrared detectors have been fabricated and tested. The designs comprise square and circular FZPLs with different numbers of Fresnel zones working in transmissive or reflective modes designed to focus infrared energy on a square-spiral antenna connected to a microbolometer. A 163× maximum increase in response was obtained from a 15-zone circular FZPL in the transmissive mode. Sensor measurements of normalized detectivity D* resulted in a 2.67× increase with FZPLs compared with measurements made of square-spiral antennas without FZPLs. The experimental results are discussed and compared with values obtained from theoretical calculations. |
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RPLAB @ gujma @ |
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740 |
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