Optical absorption modeling of thermal infrared detectors by use of the finite-difference time-domain method

The optical absorption of thin-film thermal infrared detectors was calculated as a function of wavelength, pixel size, and area fill factor by use of the finite-difference time-domain (FDTD) method. The results indicate that smaller pixels absorb a significantly higher percentage of incident energy...

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Bibliographic Details
Published in:Optics letters 2001-03, Vol.26 (5), p.280-282
Main Authors: Mirotznik, M, Beck, W A, Prather, D, Vollmerhausen, R, Driggers, R
Format: Article
Language:English
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Summary:The optical absorption of thin-film thermal infrared detectors was calculated as a function of wavelength, pixel size, and area fill factor by use of the finite-difference time-domain (FDTD) method. The results indicate that smaller pixels absorb a significantly higher percentage of incident energy than larger pixels with the same fill factor. A polynomial approximation to the FDTD results was derived for use in system models.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.26.000280