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



  • I need to calculate reflectance/transmittance of a single layer (3.0 mkm) on a thin B270 substrate (100 mkm) and to take into account substrate interference. As I understand, in OptiLayer the substrate is considered without interference. How to deal with this issue?

You should specify the “Air” substrate and create a design consisting of two layers (B270 of 100 mkm thickness and your thin film material of 3.0 mkm thickness).

  • I would like to learn example with COM Automation. Where I can find them?

You easily find these examples on your Desktop. They are automatically place there during the installation of OptiLayer.

  • We use each witness chip for deposition of several layers and then reuse it for some other layers. Let’s say, we use Chip1 for monitoring of layers 1, 2 and layers 8, 9. We use Chip2 for monitoring of layers 3, 4 and layer 10, 11. I would like to create a monitoring spreadsheet for our case but I cannot find how to do it.

In OptiMonitor you should use right-click menu and choose Misc. Options. In the corresponding window you should check “Permit reusing of chips”.

  • I would like to calculate absolute value for phase. I mean unwrapped phase (not modulo 360 degrees)?

In order to calculate absolute phase (or unwrapped phase), you just need to activate "Continuous phase" option:

Synthesis --> Options --> Axis tab (Top) -->  Axis tab (Bottom) -->  Check "Continuous phase plots". 

When you activate "Continuous Phase Plots" it will affect not only plotting. OptiLayer will try to use unwrapped phase during synthesis as well. This improves the results significantly. In this case phase targets should not have gaps in spectral dependencies. Also you may want to use "Automatic" scaling in this case, since phase will change in much wider limits.

  • I know reliable dispersion of the refractive indices of our thin film materials in the visible spectral range. If I synthesize a coating for the infra-red range or in the VIS-IR spectral range, what refractive index values are used by OptiLayer in the optimization/evaluation process? 

If your indices are specified by a formula (for example, Cauchy formula or Sellmeier formula), then OptiLayer will calculate refractive index values in the IR spectral range with the help of this formula. If you have dispersion tables, then OptiLayer will use in the IR range the constant values of refractive indices equal to the last values in the tables.

Easy to start

Icons 100x100 1OptiLayer provides user-friendly interface and a variety of examples allowing even a beginner to effectively start to design and characterize optical coatings.        Read more...

Docs / Support

Icons 100x100 2Comprehensive manual in PDF format and e-mail support help you at each step of your work with OptiLayer.



Icons 100x100 3If you are already an experienced user, OptiLayer gives your almost unlimited opportunities in solving all problems arising in design-production chain. Visit our publications page and challenge page.


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