Population Inversion, Negative Temperature, and Quantum Degeneracies
classification
⚛️ physics.gen-ph
keywords
inversionpopulationdegeneracieslasingnegativequantumtemperaturebasic
read the original abstract
We revisit the basic principle for lasing : Population inversion which is nevertheless closely linked to the negative temperature state in non-equilibrium thermodynamics. With the introduction of quantum degeneracies, we also illustrate their relationship with the lasing via the tuning of population inversion.
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