grating spectrometer
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Physikfan
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Tue Oct 25 2016, 12:49PM
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Registered Member #60240
Joined: Mon May 16 2016, 07:01PM
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The basic function of a grating spectrometer is to take the incoming light and break it down into its spectral components. The light rays of different wavelengths have to be separated physically. Using a grating spectrometer it is possible to make even absolute measurements of the wavelength. In most grating spectrometers the light is entering through the entrance slit. The divergent light beam will be made parallel by a concave mirror1 and directed to the reflection grating. From the grating the different spectral components of the light are diffracted at different angles and then focussed by a second concave mirror2 onto the exit slit.
These diffraction angles can be correlated to the light wavelength when the grating constant is known.
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Physikfan
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Registered Member #60240
Joined: Mon May 16 2016, 07:01PM
Location:
Posts: 304
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Literature:
"http://ibsen.com/wp-content/uploads/
Spectrometer-design-guide.pdf"
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