Pump-probe technique

{
  "id": "MLC-T-CHM-009681",
  "term": "Pump-probe technique",
  "field": "Chemistry",
  "definition": "A time-resolved spectroscopic method employing two sequential laser pulses to investigate ultrafast processes in materials. A 'pump' pulse excites the sample, creating a non-equilibrium state, and a delayed 'probe' pulse monitors the subsequent changes. This technique is widely used to study excited state dynamics, charge transfer, and vibrational relaxation on femtosecond to picosecond timescales.",
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "diffraction",
    "excited state",
    "infrared",
    "monitoring",
    "polarization",
    "spectroscopy",
    "visible"
  ],
  "references": [
    "PAC, 2007, 79, 293. 'Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)' on page 404 (https://doi.org/10.1351/pac200779030293)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/pump-probe-technique/"
}