Rovibronic Spectroscopy of Sympathetically Cooled 40CaH+
We measure the rovibronic transitions X 1Σ+, v″ = 0, J″ → A 1Σ+, v' = 0-3, J' of CaH+ and obtain rotational constants for the A 1Σ+ state. The spectrum is obtained using two-photon photodissociation of CaH+ cotrapped with Doppler cooled Ca+. The excitation is driven by a mode-locked, frequency-doubled Ti:Sapph laser, which is then pulse shaped to narrow the spectral bandwidth. The measured values of the rotational constants are in agreement with ab initio theory.
Calvin, AT; Janardan, S; Condoluci, J; Rugango, R; Pretzsch, E; Shu, G; Brown, KR
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