Document Detail

Type-II superlattice dual-band LWIR imager with M-barrier and Fabry-Perot resonance.
MedLine Citation:
PMID:  21725479     Owner:  NLM     Status:  In-Data-Review    
We report a high performance long-wavelength IR dual-band imager based on type-II superlattices with 100% cutoff wavelengths at 9.5 μm (blue channel) and 13 μm (red channel). Test pixels reveal background-limited behavior with specific detectivities as high as ∼5×10<sup>11</sup> Jones at 7.9 μm in the blue channel and ∼1×10<sup>11</sup> Jones at 10.2 μm in the red channel at 77 K. These performances were attributed to low dark currents thanks to the M-barrier and Fabry-Perot enhanced quantum efficiencies despite using thin 2 μm absorbing regions. In the imager, the high signal-to-noise ratio contributed to median noise equivalent temperature differences of ∼20 milli-Kelvin for both channels with integration times on the order of 0.5 ms, making it suitable for high speed applications.
Edward Kwei-Wei Huang; Abbas Haddadi; Guanxi Chen; Binh-Minh Nguyen; Minh-Anh Hoang; Ryan McClintock; Mark Stegall; Manijeh Razeghi
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Optics letters     Volume:  36     ISSN:  1539-4794     ISO Abbreviation:  Opt Lett     Publication Date:  2011 Jul 
Date Detail:
Created Date:  2011-07-04     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7708433     Medline TA:  Opt Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2560-2     Citation Subset:  IM    
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