Measurement of the spectrum of resonance fluorescence from a two-level atom in an intense monochromatic field

摘要: We have made measurements of the spectrum resonance fluorescence emitted by sodium atoms in an intense, uniform, monochromatic field. The transition used experiment was between $3^{2}S_{\frac{1}{2}}$ ($F=2$, ${m}_{F}=2$) ground state and $3^{2}P_{\frac{3}{2}}$ (${F}^{\ensuremath{'}}=3$, ${m}_{F}^{\ensuremath{'}}=3$) excited state. A separate light beam, circularly polarized resonant with this transition, to prepare $F=2$, ${m}_{F}=2$ magnetic sublevel. This pumping scheme obtain for both on- off-resonance excitations. are good agreement Mollow's calculation. In addition, we describe conditions under which observed asymmetric spectra similar those earlier experiments.