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Spectrometer
ESS3271 Lecture
Spectrometer
• An optical instrument used to measure properties of light over a specific portion of the electromagnetic spectrum
• The variable measured is most often the light's intensity
• A spectrometer is used in spectroscopy for producing spectral lines and measuring their wavelengths and intensities
Light dispersion
Mirror
Detector
Slit + Filter
Grating
Diffraction Grating
• An optical component with a surface covered by a regular pattern of parallel lines, typically with a distance between the lines comparable to the wavelength of light
• Light rays that pass through such a surface are bent as a result of diffraction, related to the wave properties of light
• This diffraction angle depends on the wavelength of the light
Grating Equation
k: diffract
ESS3271 Datasheet
