Traditional Culture Encyclopedia - Traditional stories - What are the grating light sources?
What are the grating light sources?
1. deuterium gas lamp: deuterium gas lamp is used as a light source in ultraviolet-visible region, and its spectral range is from 185nm to 400nm.
2. Tungsten lamp: Tungsten lamp is a widely used light source of visible light and near infrared light, and its spectral range extends from 400 nanometers to several thousand nanometers.
3. Mercury lamp: Mercury lamp is used for ultraviolet spectrum analysis, and the spectrum range extends from 200 nanometers to several hundred nanometers.
4. Holographic grating light source: Holographic grating light source is a kind of light source that produces spectrum through grating diffraction technology, which can produce spectrum with high resolution and precise wavelength control.
5. Incandescent lamp: Incandescent lamp is a widely used light source, and its spectrum covers the visible region, but it is discontinuous and has obvious color temperature drift.
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