wat is the role of michelson interferometer in FTIR and He-Ne lase.detailed answer required in simple language

wat is the role of michelson interferometer in FTIR and He-Ne lase.detailed answer required in simpl..

Answer / b.gangatharan

Michelson interferometer is used for very fast scanning from 4000 to 400 cm-1 within seconds in pharma industry.without Michelson interferometer it will take long hours for scanning.
Caplin point,

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