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Key terms: z nu math atom gamma photons cdot gain ln intensity equation electrons pi input optical decay signal cdot z frequency laser sigma emitted stimulated emission nucleus excited state energy level over dz delta n spectral line einstein variables amplifier ground state other photons wavelength absorption lorentzian coefficient square meter same frequency line shape function saturation intensity electromagnetic input intensity spontaneous emission general gain equation small signal gain population inversion differential equation optical amplification Search external links cited by footnotes on Wikipedia page Stimulated emission: |
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