کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1784139 1524116 2015 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Low pitch LWIR QWIPs: Performance level and image quality
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک اتمی و مولکولی و اپتیک
پیش نمایش صفحه اول مقاله
Low pitch LWIR QWIPs: Performance level and image quality
چکیده انگلیسی


• We study 15 μm pitch QWIP FPAs.
• The estimated performance (NETD) is compatible with high end, demanding applications.
• We propose an original way for studying optical crosstalk.

We present recent results obtained on 15 μm pitch LWIR QWIP arrays at Sofradir. Based on experimental data gathered on several QWIP wafers, the performance (NETD) at the system level has been estimated. We show that, in spite of the small pitch, values as low as 50 mK can be achieved for rather closed optical systems (f/2.5) and for operating temperatures (74 K) compatible with available compact cryo-coolers.We also demonstrate that specific pixel configurations can be designed to investigate the pixel-to-pixel optical crosstalk. Such measurements can help to better understand the limitations set by the geometry of the pixel on the Modulation Transfer Function (MTF). In particular, we show that the optical crosstalk due to photon transfer through the inter-pixel space is rather small for unthinned devices.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Infrared Physics & Technology - Volume 70, May 2015, Pages 129–133
نویسندگان
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