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OptiLayer:  Your Partner in Design and Post-Production Characterization of Optical Coatings

 

 Example 3. Design of quasi-rugate minus-filter

 

Constrained optimization option allows you to design multilayers with quarter-wave optical thicknesses of coating layers. For the design procedure a special material, so called changeable material, with variable refractive index is used. The design procedure is based on the constrained optimization of a special type. Constrained optimization is used in order to obtain designs consisting of quarter-wave layers. 
 
minus filter  minus filter
 Transmittance of 47-layer quasi-rugate minus filter  Refractive index profile of 47-layer quasi-rugate minus filter. All layers have quarter-wave optical thicknesses

Learn more in:   A.V. Tikhonravov, M.K. Trubetskov, and T.V. Amotchkina, "Application of constrained optimization to the design of quasi-rugate optical coatings," Appl. Opt. 47, 5103-5109 (2008).

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