کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1785029 | 1023291 | 2009 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
QWIP focal plane arrays on InP substrates for single and dual band thermal imagers
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک اتمی و مولکولی و اپتیک
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![عکس صفحه اول مقاله: QWIP focal plane arrays on InP substrates for single and dual band thermal imagers QWIP focal plane arrays on InP substrates for single and dual band thermal imagers](/preview/png/1785029.png)
چکیده انگلیسی
We present an extensive review of the studies on InP based single and dual band QWIPs. While reviewing the characteristics of InP/InGaAs and InP/InGaAsP LWIR QWIPs at large format FPA level, we experimentally demonstrate that the cut-off wavelength of AlInAs/InGaAs QWIPs can be tuned in a sufficiently large range in the MWIR atmospheric window by only changing the quantum well (QW) width at the lattice matched composition. The cut-off wavelength can be shifted up to â¼5.0 μm with a QW width of 22 Ã
in which case very broad spectral response (Îλ/λp = â¼30%) and a reasonably high peak detectivity are achievable leading to a noise equivalent temperature difference as low as 14 mK (f/2) with 25 μm pitch in a 640 Ã 512 FPA. We also present the characteristics of InP based two-stack QWIPs with wavelengths properly tuned in the MWIR and LWIR bands for dual color detection. The results clearly demonstrate that InP based material systems display high potential for dual band MWIR/LWIR QWIP FPAs needed by third generation thermal imagers.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Infrared Physics & Technology - Volume 52, Issue 6, November 2009, Pages 385-390
Journal: Infrared Physics & Technology - Volume 52, Issue 6, November 2009, Pages 385-390
نویسندگان
S.U. Eker, Y. Arslan, M. Kaldirim, C. Besikci,