Finesse

{
  "id": "MLC-T-CHM-004431",
  "term": "Finesse",
  "field": "Chemistry",
  "definition": "A dimensionless quantity that characterizes the sharpness of the resonance peaks in an optical resonator, such as a Fabry-Pérot interferometer. It is defined as the ratio of the free spectral range to the full width at half maximum of a resonance peak. A higher finesse indicates a more selective resonator with narrower spectral linewidths.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "free spectral range"
  ],
  "references": [
    "PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 747 (https://doi.org/10.1515/pac-2019-0203)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/finesse/"
}