Abstract
It is shown that with counter-propagating laser beams of identical circular polarisation, symmetry-preserving transitions in icosahedral molecules produce totally Doppler-free lines in two-photon and four-photon absorption spectra. In the four-photon case, this feature cannot occur for molecules of any other symmetry, and therefore characterises an icosahedral species.
Original language | English |
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Pages (from-to) | 37-40 |
Number of pages | 4 |
Journal | Chemical Physics Letters |
Volume | 146 |
Issue number | 1-2 |
DOIs | |
Publication status | Published - 1 Apr 1988 |