Doubly refracting prisms are used to convert an ordinary Ebert monochromator into a duochromator adapted to measuring small wavelength shifts in a spectral line. The instrument has the advantages of simplicity, good time resolution, high luminosity, and geometrically identical channels. An example of its use is given.
© 1965 Optical Society of America
Original Manuscript: September 28, 1964
Published: February 1, 1965
Joseph G. Hirschberg, "Simple Duochromator for the Measurement of Small Displacements of a Spectral Line," Appl. Opt. 4, 243-245 (1965)