Please answer these three questions (1) In what ways are the photons emitted during stimulated emission related to...

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Physics

Please answer these three questions
(1)
In what ways are the photons emitted during stimulated emissionrelated to the incident (stimulating) photons?
(2)
What conditions must a collection of atoms meet in order to amplifyan incident beam of light?
(3)
Very briefly describe how these requirements are met in ahelium

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4.3 Ratings (738 Votes)

aIn the classical view the energy of an electron orbiting anatomic nucleus is larger for orbits further from the nucleus of anatom However quantum mechanical effects force electrons to takeon discrete positions in orbitals Thus electrons are found inspecific energy levels of an atom two of which are shownbelowWhen an electron absorbs energy either from light photons orheat phonons it receives that incident quantum of energy Buttransitions are only allowed in between discrete energy levels suchas the two shown above This leads to emission lines and absorptionlinesWhen an electron is excited from a lower to a higher energylevel it will not stay that way forever An electron in an See Answer

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