Fluorescence spectrum of a strongly driven two-level atom. Resonant driving splits the emission into three peaks (Autler-Townes / Mollow triplet) separated by the generalized Rabi frequency Ω_gen = √(Ω_R² + Δ²).
Laser Parameters
Dressed State Physics
Ω_gen = √(Ω_R² + Δ²)
Peaks at: ω₀, ω₀ ± Ω_gen
Peak heights (on resonance):
• center: I_c ∝ 3γ/4Ω_R²
• sidebands: I_s ∝ γ/4Ω_R²
Ratio center:side = 3:1