Laser spectroscopy of the A∼2Π-X∼2Σ+ and B∼2Σ+-X∼2Σ+ transitions of CaCCD

► Laser induced fluorescence rotationally resolved spectrum of the A-X transition of CaCCD. ► Cavity ring down spectrum of the B-X transition of CaCCD. ► Comparison between the molecular parameters of CaCCD and CaCCH. ► Validity of the unique perturber model applied to CaCCD and CaCCH demonstrated.