continuous scan interferometer

https://doi.org/10.1351/goldbook.08581
Interferometer in which the optical path difference is continually changed.
Notes:
  1. Continuous scan interferometer is typically used for Fourier-transform infrared spectroscopy.
  2. In slow scan interferometers, the rate of change of optical path difference is less than \(\pu{0.05 cm s-1}\) and a mechanical chopper or some other ancillary modulation is frequently used to provide an adequate modulation frequency.
  3. In rapid-scan interferometers, the rate of change of optical path difference is above \(\pu{0.05 cm s-1}\), high enough that no additional modulation is needed.
See also: step-scan interferometer
Source:
PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 741 (https://doi.org/10.1515/pac-2019-0203)