High resolution laser spectroscopy of the ozone molecule at the dissociation threshold near 1.2 µm
High sensitivity spectra of the main ozone isotopologue were recorded using a cavity ring-down spectrometer in the region of 7920–8670 cm-1, covering the range up to the dissociation threshold and above. The sensitivity of the recordings of the order of 2 × 10-11 cm-1 was achieved that makes it possible to detect high two energy combination bands up to ten vibrational quanta in electronic ground state . Line positions and intensities are measured for these bands. These combination bands are superimposed to vibronic hot bands of the 16O3 from the (100) and (020) electronic ground state levels to the excited 3A2 triplet state which were analysed .
This work was supported by the Russian Science Foundation Grant No. 19-12-00171.
 Semen Vasilchenko, Alain Barbe, Evgeniya Starikova, Samir Kassi, Didier Mondelain, Alain Campargue, Vladimir Tyuterev, Physical Review A, 2020, 102, 5, 052804.
 Semen Vasilchenko, Didier Mondelain, Samir Kassi, Alain Campargue, Journal of Quantitative Spectroscopy & Radiative Transfer, 2021, 272, 107678