Abstract

The use of the Michelson interferometer as a Fourier transform spectrometer is described. Fringe visibility curves are obtained with an electron photomultiplier or silicon photocell, and Fourier transforms of the visibility curves are taken with the aid of a digital computer. Application of the technique is made to the axial mode structure and phenomenon of “hole burning” in He-Ne lasers, to the shape of the mercury green line and sodium yellow lines, and to the Zeeman spectrum of the mercury green line Δmj = 0 transitions.

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