There are different types of detectors, such as photomultiplier tubes, charge-coupled devices (CCDs), and diode arrays. The detector converts the light signal into an electrical signal, which can then be analyzed and interpreted to obtain information about the sample being. Internal structure of a grating spectrometer: Light comes from left side and diffracts on the upper middle reflective grating. An optical spectrometer (spectrophotometer, spectrograph or spectroscope) is an instrument. Spectroscopy is the study of how light interacts with matter, and a necessity for these studies is the ability to detect light. Presented here is a discussion of. The answer is spectroscopy. Credit: NASA, ESA, and the Hubble Heritage Team (STScI/AURA). The performance of a detector directly influences the sensitivity, resolution, and accuracy of spectroscopic measurements.
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