Observation of a laser-induced transmittance modification in Ni2+ doped CsCdCl3

Abstract

The absorbance of the narrow ³A₂ → ¹A₁ (O point group symmetry approximation) crystal-field transition in CsCdCl₃ doped with Ni²⁺ ions can be influenced by a laser tuned to a strong inter-excited state transition reported earlier for this material. The intensity of the band maximum at 525.2 nm decreases to nearly zero for the duration of a laser pulse in resonance with the intense ¹A₁ ↔ ³T₂ inter-excited state transition at 701.7 nm which couples the ¹A₁ and ³T₂ states. Detuning the coupling laser wavelength reduces the effect considerably and thus confirms the importance of this particular inter-excited state transition for the control of a conventional transition from the electronic ground state.