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Abstract
On irradiating a molecular system with a laser beam of ultraviolet or visible frequency, photon absorption occurs when an electronic state is at a suitable energy level relative to an initial state. Despite meeting this criterion, interesting metastable states can remain inaccessible because of symmetry constraints. In this Letter a mechanism, based on the input of an off-resonant beam, is shown to enable the population of such states. This is achievable because the laser-modified process involves different selection rules compared to conventional photon absorption. The effects of applying the stimulus beam to either a one- or two-photon process are examined.
Original language | English |
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Pages (from-to) | 235-238 |
Number of pages | 4 |
Journal | Chemical Physics Letters |
Volume | 590 |
Early online date | 4 Nov 2013 |
DOIs | |
Publication status | Published - 18 Dec 2013 |
Projects
- 1 Finished