Multi-Photon and Multi-Phonon Interactions
Multi-photon processes where the ion system can absorb several photons at once – though the more photons that are involved the less chance of the absorption occurring, so the less noticeable is the effect. Similar mechanisms are involved with multi-phonon processes.
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Related Terms: Absorption, Excited State, Excited State Absorption (ESA), Multi-Photon and Multi-Phonon Interactions