Saturated spectroscopy

Saturated spectroscopy, also known as saturation spectroscopy, is a spectroscopic technique that relies on the saturation of optical transitions in a medium, typically a gas or a liquid. In this method, a light beam is used to excite a particular transition in atoms or molecules, and the phenomenon of saturation occurs when the intensity of the light is high enough to significantly populate the excited state, leading to a reduction in the absorption of light at the corresponding wavelength.