KnowraSpontaneous emissionLinked fromLinked fromThe 13 pages that link to Spontaneous emission, each with the reason it gives.All 13Related 10Narrower topic 1Compared with 2Laser coolingRelated: Its recoil direction averages out over many cycles while laser absorption supplies directional slowing.Population inversionRelated: It drains excited populations and contributes background light in an inverted medium.Atomic emission spectrumRelated: It is the usual process by which isolated excited atoms release their spectral lines.Excited stateRelated: It is one route by which an excited state loses energy.Optical pumpingRelated: Decay redistributes atoms among ground-state sublevels after optical excitation.Quantum fluctuationRelated: Quantum-field fluctuations help explain emission even without an external light field.Einstein coefficientsRelated: The coefficient A₂₁ gives its probability per unit time.Fermi's golden ruleRelated: Coupling to vacuum electromagnetic modes gives an atomic decay rate through the rule.Collective effects in atomic physicsRelated: Independent spontaneous emission is the reference against which collective emission is compared.QuantumRelated: It shows how a system releases a discrete energy difference as a photon.