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 0.05 cms−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 0.05 cms−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 [Terms] [Paper]
Citation: 'continuous scan interferometer' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.08581 RIS BibTex EndNote
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