Classification of Spectral Analysers

   According to the working principle of modern spectrometers, spectrometers can be divided into two categories: classical spectrometers and new spectrometers. Classical spectroscopic instruments are based on the principle of spatial dispersion: new spectroscopic instruments are based on the principle of modulation. Classical spectroscopic instruments are all slit spectroscopic instruments. Modulation spectrometer is a non-spatial spectroscopic instrument. It uses circular aperture to enter light. According to the principle of dispersive components, spectrometers can be divided into prism spectrometer, diffraction grating spectrometer and interference spectrometer. Optical Multi-channel Analyser (OMA) is a new type of photon detector (CCD) and computer-controlled optical multi-channel analyzer which appeared in recent decades. Spectral analysis instrument, which integrates the functions of information acquisition, processing and storage. Because OMA no longer uses photosensitive latex, avoiding and eliminating darkroom processing and a series of tedious processing afterwards, the measurement work has fundamentally changed the traditional spectral technology, greatly improved the working conditions and improved the working efficiency: using OMA to analyze the spectrum, the measuring basin is accurate, fast, convenient, sensitive and responsive. At present, it has been widely used in almost all spectral measurements, analysis and research work, especially in the detection of weak and transient signals.