InSb detector array

D. L. Weinberg, C. J. Gridly, A. F. Milton Evaluation of InSb Detector Array Performance , Proc. IRIS Detector Specialty Meeting, Minneapolis, Minn., June 1979... 

Yield. There are no single-point array frulures on ungated InSb detector arrays. Arrays can be made as large as avmlable substrates. Effective array sizes are readout limited. This is due to the fact that the readout is subject to single point failures and is constrained by current manufacturing technology. 

Antimony (Sb), 3 41-56, 56. See also Group Ill-Sb system InAsSb alloy InSb photodiode detectors/arrays Lead-antimony alloys Low antimony lead alloys Stib- entries in babbitts, 24 797 catalyst poison, 5 257t chemical reactions, 3 42—44 in coal, 6 718 economic aspects, 3 47-48 effect of micro additions on silicon particles in Al-Si alloys, 2 311-312 effect on copper resistivity, 7 676t environmental concerns, 3 50 gallium compounds with, 12 360 health and safety factors, 3 51 in pewter, 24 798... 

Indium (In), 14 190-203. See also AlGalnN compounds InAsSb entries InGa-entries InSb photodiode detectors/ arrays... 

In-process dressing, electrolytic, 9 603 InSb photodiode detectors/arrays, 19 158. 

The first array detectors to be used for FT-IR hyperspectral imaging were focal-plane arrays (FRA) fabricated from InSb. MCT arrays were incorporated shortly thereafter, and these detectors are usually cold-shielded to improve their performance. The individual elements are bump-bonded onto small spheres of indium (a very soft metal). This method of fabrication sometimes led to poor reliability, but this problem has been largely overcome. Details of the construction of FPAs are given by in the paper by Scribner et al. [6]. Most InSb and MCT arrays are square, with 64 X 64, 128 x 128, or 256 x 256 detector elements (pixels) that are 6.25 X 6.25 pm in size. Thus, the entire detector array is less than 0.5 mm on the side. Note also that when such small detectors are used, their NEP is concomitantly small (see Section 7.1). 

Fixed-grating spectrometers require a linear detector array for the simultaneous detection of the spectral elements dispersed along a line, and imaging applications require a two-dimensional detector array for spatial resolution. While both types of array are available for all of the detector materials included in Figure 3, those most commonly used are silicon, InSb and InGaAs. 

Consider the requirement to test a 0.25-in.-long array of PV InSb detectors at a background of 5 X 10 photons/(cm s). To determine whether we will have adequate signal and signal-to-noise ratios, we will need the expected responsivity and noise-equivalent irradiance (NEI) values for the detector. If these are not available from previous tests, we can predict them using the methods of Chapter 4. For our example, assume that the responsivity is 15 x 10 V/[photon/(cm s)] and NEI is 2 X 10 photons/(cm s). 

A multiplex/multichannel microimaging FTIR system has been developed. The strategy is to combine an IR focal plane array detector with a step-scan interferometer. A InSb focal array detector was used with a 128 x 128 pixel distribution. The detector was interfaced with a with a commercially available step-scan FT-IR interferometer. 

A 256 X 256 INSB ARRAY FOR GROUND-BASED ASTRONOMY 2. Detector Array... 

The early InSb detector material arrays were responsive from about 1.5/um to 5.5jimi. In the hist two years, however, the SBRC proprietary visible to medium-wavelength infrared (VISMIR) coating has been devdoped that allows the InSb detector to respond from 0.35/tm to 5.5/un. Although the VISMIR is available for astronomy, the most commonly provided anti-... 

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