Transient-stimulated emission pumping

{
  "id": "MLC-T-CHM-012229",
  "term": "Transient-stimulated emission pumping",
  "field": "Chemistry",
  "definition": "A time-resolved pump-dump technique in which a short pump pulse excites the molecules and a second short dump pulse, delayed by a variable time, stimulates them back down to the ground electronic state. The population removed by the dump pulse, followed as a function of the pump-dump delay, shows how the excited state evolves. It differs from conventional stimulated emission pumping, which uses narrow-band pulses to reach selected high vibrational levels of the ground state.",
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "excited state",
    "ground state",
    "spectroscopy"
  ],
  "references": [
    "PAC, 2007, 79, 293. 'Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)' on page 434 (https://doi.org/10.1351/pac200779030293)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/transient-stimulated-emission-pumping/"
}