(color online) The proposed scheme to create quasi-closed transitions for laser cooling of BaF. Solid black lines indicate the relevant electronic and vibrational structures in BaF. Red upward lines denote laser-driven transitions at the wavelengths λ_νν′. Wavy lines represent spontaneous decays from the state with FCFs f_ν′ν. The leakages from to A^′2Δ (cyan) is described by the dotted blue line.