Creating a wavelength selectable light source with diffraction grating

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SUMMARY

A miniature wavelength selectable light source can be effectively created using a broad spectrum LED or a tiny xenon/deuterium lamp in conjunction with a small diffraction grating and necessary optics such as mirrors and lenses. The application of this setup is particularly relevant in the field of spectrometry. The performance and quality of the light source will depend on the desired specifications for wavelength selection and the full width at half maximum (FWHM) of the output spectrum.

PREREQUISITES
  • Understanding of diffraction grating principles
  • Familiarity with broad spectrum LED and xenon/deuterium lamp characteristics
  • Knowledge of optical components such as mirrors and lenses
  • Basic concepts of spectrometry and wavelength selection
NEXT STEPS
  • Research the design and functionality of monochromators
  • Explore the specifications and applications of deuterium arc lamps
  • Investigate the principles of optical filtering using diffraction gratings
  • Learn about the performance metrics of light sources in spectrometry
USEFUL FOR

This discussion is beneficial for optical engineers, spectroscopists, and researchers involved in developing compact light sources for spectrometry applications.

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TL;DR
Creating a tiny wavelength selectable light source using diffraction grating
Could a miniature wavelength selectable light source (lamp + monochromator) be created by using a broad spectrum led or tiny xenon/deuterium lamp as a light source combined with a small diffraction grating (and other necessary optics like mirrors, lenses)? Thinking of an application in spectrometry.
 
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opticsnerd123 said:
TL;DR Summary: Creating a tiny wavelength selectable light source using diffraction grating

Could a miniature wavelength selectable light source (lamp + monochromator) be created by using a broad spectrum led or tiny xenon/deuterium lamp as a light source combined with a small diffraction grating (and other necessary optics like mirrors, lenses)? Thinking of an application in spectrometry.
A broad spectrum LED and the xenon/deuterium lamp both have fairly discrete or peaky spectra. How continuous and smooth do you want this source to be?

1699994773238.png

https://en.wikipedia.org/wiki/Deuterium_arc_lamp
 
opticsnerd123 said:
TL;DR Summary: Creating a tiny wavelength selectable light source using diffraction grating

Could a miniature wavelength selectable light source (lamp + monochromator) be created by using a broad spectrum led or tiny xenon/deuterium lamp as a light source combined with a small diffraction grating (and other necessary optics like mirrors, lenses)? Thinking of an application in spectrometry.

Yes, but I suppose that depends on what you mean by "miniature" and what your "selectable wavelength" FWHM specification is.

https://lambdasys.com/uploads/LEOI-92.pdf
 

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