Can a broken light filter shift the wavelength of light exiting it?

Aden Lambert

Aden Lambert

Answered question

2022-11-09

Can a broken light filter shift the wavelength of light exiting it?

Answer & Explanation

gortepap6yb

gortepap6yb

Beginner2022-11-10Added 19 answers

No, there is no way to convert a beam of HeNe laser to a laser beam of another wavelength with a glass filter. There are some phenomena, like fluorescence or Raman scattering, that will produce light of different wavelength, but it will not follow the path of the laser beam. Also, it will be weaker (much weaker in case of Raman scattering) and have a much broader wavelength distribution.
Therefore, there must be a mistake in your wavelength calculations. You didn't describe how you measured it exactly (in particular, the part about forcing the fit to the theoretical values). You could put a description in another question so that people here could check if your method is correct.

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