Towards higher sensitivity and lighter elements by collinear laser spectroscopy at isolde

New resonance detection mechanisms based on atom or ion counting instead of fluorescence photon detection have been introduced in collinear laser spectroscopy at ISOLDE. This increased the sensitivity by several orders of magnitude and allowed measurements on short-lived isotopes very far from stability, which are available in minor quantities only (≤10³ ions per second). Results of recent measurements on the medium mass and light elements Sr, Kr, Ca and Li are presented.