The constrained optimization approach is applied to the design of quasi-rugate optical coatings. These coatings are defined as multilayers with no thin layers where refractive index profiles resemble rugate-type refractive index profiles and where spectral properties are typical for rugate filters. It is shown that all design problems that are usually solved using rugate filters can be solved successfully in the frame of quasi-rugate optical coatings. Comparison between quasi-rugate and two-component multilayer designs is provided.
© 2008 Optical Society of America
Original Manuscript: July 2, 2008
Manuscript Accepted: July 24, 2008
Published: September 23, 2008
Alexander V. Tikhonravov, Michael K. Trubetskov, and Tatiana V. Amotchkina, "Application of constrained optimization to the design of quasi-rugate optical coatings," Appl. Opt. 47, 5103-5109 (2008)