| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1784964 | Infrared Physics & Technology | 2007 | 4 Pages |
Abstract
Narrow spectral band infrared detectors are required for multispectral infrared imaging. We review the first photovoltaic resonant cavity enhanced detectors (RCED) for the mid-IR range. The lead-chalcogenide (PbEuSe) photodetector is placed as a very thin layer inside an optical cavity. At least one side is terminated with an epitaxial Bragg mirror (consisting of quarter wavelength PbEuSe/BaF2 pairs), while the second mirror may be a metal. Linewidths are as narrow as 37 nm at a peak wavelength of 4400 nm, and peak quantum efficiencies up to above 50% are obtained.
Related Topics
Physical Sciences and Engineering
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Atomic and Molecular Physics, and Optics
Authors
Hans Zogg, Martin Arnold,