Spectrometers Based on Hybrid Linear Array Detectors

Spectrometers Based on Hybrid Linear Array Detectors 

The spectra are then quilted together to produce the image. This process is repeated until the entire spatial region of interest has been covered. In addition to this linear detector array, a single 100 pm medium-band MCT detector is mounted in the same Dewar flask, that allows individual spectra to be acquired over a wider range than the spectra measured with the array. A similar instrument is now available from Thermo Fisher Corporation that consists of a 28-pixel linear array arranged in a 2 x 14 pixel format. 

Let us assume the sample area to be measured is moderate in size (say, 700 X 700gm), and is to be collected at high spatial resolution and 4cm spectral resolution at a SNR of 200. Based on the manufacturers typical specifications, if all other parameters are kept equal, we have  

Everall also demonstrated the problems of quantitative ATR imaging when trying to measure the image of a sample containing hard spheres with a diameter 

The differences between FPAs and linear arrays are not always of this magnitude, but they are usually in favor of the FPA-based imaging system. In fact, when employing even larger FPAs, such as the 128 x 128 FPA, the differences are even larger. Linear array systems are, however, generally at their most efficient when 

Everall also demonstrated the problems of quantitative ATR imaging when trying to measure the image of a sample containing hard spheres with a diameter equal to or smaller than the depth of penetration [72]. He showed that shallow penetration combined with the finite spatial resolution of an imaging 

Another image preserving ATR accessory that has been used in conjunction with macro imaging is the Harrick FastIR 75, which consists of a simple inverted 

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