Photodetectors
Photodetectors are devices used to detect and measure electromagnetic radiation in the form of photons. In space and astronautical engineering, photodetectors are used in various applications such as remote sensing, imaging, and communication. They are used to detect and measure the intensity, wavelength, and polarization of light. Photodetectors can be made of various materials such as silicon, germanium, and indium gallium arsenide. They can also be designed to operate in different spectral ranges such as ultraviolet, visible, and infrared. In space applications, photodetectors are used in telescopes, cameras, and other instruments to study celestial objects and phenomena. They are also used in satellite communication systems to receive and transmit signals. The performance of photodetectors is characterized by parameters such as quantum efficiency, dark current, and noise equivalent power.
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