Power Saturation of theJ=1→2Rotational Transition of OCS

The power saturation of seven lines arising from the $J=1\mathrm{}\to 2$ rotational transition in OCS has been investigated with a Stark-cavity spectrometer. The experimental results on all investigated lines confirm the theory of Karplus and Schwinger adapted in this paper to the case of gas enclosed in a cylindrical cavity absorption cell oscillating in a $T{E}_{0mn}$ mode with an arbitrary $n$-value, and $m$-value from 1 to 10.