Single-element detector

Basic Interferometer Properties (1.6-9) Although the relationship between element aperture diameter, baseline, and wavelength is quite simple, it is instructive to visualise the influence of each of these characteristics. To this end, we consider a Young s interferometer with element diameters D = Im, a baseline B = 10m at a wavelength A = 1/nm in the animations. The intensity profile across the fringe pattern on the detector (screen) is shown with linear and logarithmic intensity scales in the lower two panels. The blue line represents the intensity pattern produced without interference by a single element. 

Most standard infrared spectrometers currently operating in the mid-IR spectral region feature single element detectors. Exceptions are analyzers that are equipped with multiple detectors dedicated to single wave-... 

FTIR microspectroscopy using a single-element detector... 

The SNR analysis for a single-element detector in a point mapping configuration was adapted to analyse the SNR of a pixel in an imaging FPA detector as42... 

Figure 3.7 Schematic for a scanning IR microspectrometer system using a single-element detector and the possibility for confocal operation where aperturing is used both before and after the sample.

The ideal high-throughput analytical technique would be efficient in terms of required resources and would be scalable to accommodate an arbitrarily large number of samples. In addition, this scalability would be such that the dependence of the cost of the equipment to perform the experiments would scale in a less than linear manner as a function of the number of samples that could be studied. The only way to accomplish this is to have one or more aspects of the experimental setup utilize an array-based approach. Array detectors are massively multiplexed versions of single-element detectors composed of a rectangular grid of small detectors. The most commonly encountered examples are CCD cameras, which are used to acquire ultraviolet, visible and near-infrared (IR) photons in a parallel manner. Other examples include IR focal plane arrays (FPAs) for the collection of IR photons and channel electron multipliers for the collection of electrons. 

---