SPECTROSCOPIC APPLICATIONS USING RING-DOWN CAVITIES
The present chapter deals with the applications of cavity ring-down
spectroscopy and its variants.
In a first section, a rather large number of studies
involving the weak transitions in the oxygen molecule, including the effects
of magnetic fields and collisions, are described. This molecule has served
as a benchmark system to demonstrate the opportunities of ring-down
techniques.
In a subsequent section, we give an overview of the
studies in which ring-down techniques have been applied to produce
new spectroscopic data on molecules.
In the last section, we have listed some pros and cons of ring-down
techniques and the alternative techniques commonly used in
molecular spectroscopy: laser-induced fluorescence, resonantly enhanced
multi-photon ionization, coherent anti-Stokes Raman spectroscopy,
degenerate four-wave-mixing and the non-laser Fourier-transform
spectroscopic technique.
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