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Physics 22 Online
OpenStudy (anonymous):

what is quantum defect?

OpenStudy (owlfred):

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OpenStudy (anonymous):

In laser science, the term quantum defect refers to the fact that the energy of a pump photon is generally higher than that of a signal photon (photon of the output radiation). The difference of energies goes to the heat; this heat may carry away the excess of entropy delivered with the multimode uncoherent pump.

OpenStudy (anonymous):

thanks dear

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