At certain small angles of the grating, any in-plane spectrometer will pass stray light that has been returned by the reflecting optics for a second diffraction. Paths of this source of stray light and its structure have been calculated and confirmed experimentally.
© 1968 Optical Society of America
Original Manuscript: February 1, 1968
Published: August 1, 1968
Joshua J. Mitteldorf and Donald O. Landon, "Multiply Diffracted Light in the Czerny-Turner Spectrometer," Appl. Opt. 7, 1431-1435 (1968)