The problem of designing nonpolarizing beam splitters with as broad a spectral band as practical has not been clearly understood. The effort of the work reported here has been to glean understanding from the various results of a contest for such designs and further studies of what might be the underlying principles and behaviors that are involved in such designs. A few key layer patterns have been observed, and the importance of symmetry in these patterns has been discovered. Four-layer building blocks have been found that relate to the two quarter-wave optical thickness pairs used as building blocks in normal- incidence designs.
© 2008 Optical Society of America
Original Manuscript: August 15, 2008
Revised Manuscript: October 6, 2008
Manuscript Accepted: October 13, 2008
Published: November 19, 2008
Ronald R. Willey, "Building blocks for nonpolarizing optical coatings," Appl. Opt. 47, 6230-6235 (2008)