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The 13 pages that link to Spontaneous emission, each with the reason it gives.

• LaserCompared with: Unlike this random process, stimulated emission produces phase-matched photons that reinforce the field.

• Laser coolingRelated: Its recoil direction averages out over many cycles while laser absorption supplies directional slowing.

• Stimulated emissionCompared with: Unlike stimulated emission, it produces photons with random emission times and directions.

• 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.

• Geiger–Nuttall lawNarrower topic: Alpha decay belongs to this broader class, while the law addresses one specific emission mode.

• 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.