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I'm trying to figure out which gas emits a specific wavelength when excited.

Say I want to develop an LED that emits a certain wavelength.

How would I figure out which gas emits that specific wavelength?

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  • $\begingroup$ physics.stackexchange.com $\endgroup$ Aug 4 '20 at 11:38
  • $\begingroup$ A gaseous LED - that's something new. Traditionally the working principle of LEDs is presented as a derivative of solid state physics. Maybe you mean some gas discharge device? Glow or neon lamp or gas laser? $\endgroup$
    – user287001
    Jul 30 '21 at 10:18
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michelson interferometer apparatus can be used for your task in a laboratory

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  • $\begingroup$ The answer is correct, but my question was wrong, so I changed the title. What I meant to ask was if there's a way to predict the wavelength of a gas beforehand. $\endgroup$
    – vaid
    Mar 7 '20 at 2:04
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    $\begingroup$ Are you looking for a library of emission lines for various gases, or do you want to predict the emission wavelengths from physical principles? $\endgroup$
    – Mark
    Mar 7 '20 at 2:54
  • $\begingroup$ @Mark I'm not sure tbh. Good question. I'd assume the latter if I want a very specific wavelength, however a library of emission lines for various gases could also be benefitial. $\endgroup$
    – vaid
    Mar 21 '20 at 15:47

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