Effect of the coating-thickness error on the performance of an optical component

Marija Strojnik

doi:10.1117/12.221394

29 September 1995 Effect of the coating-thickness error on the performance of an optical component

Marija Strojnik

Proceedings Volume 2553, Infrared Spaceborne Remote Sensing III; (1995) https://doi.org/10.1117/12.221394
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

Errors in the thickness of the coating deposited on an optical component contribute to the fabrication-related performance deterioration of an optical system. We analyze the effects of systematic thickness errors, as might be generated during the coating fabrication process. The reflectivity changes only minimally from the nonperturbed values. However, the phase is very sensitive to the coating error. The effect of the coating thickness error on the performance of an optical element is two-fold. The layer thickness error results in a phase shift that differs from the design values for both the s- and the p-polarized light. The coating thickness error may additionally change the apparent surface figure of the optical component. Using the numerically-controlled diamond turning machines, a component may be fabricated intentionally with a requisite figure error to compensate for the coating thickness error.

Citation Download Citation

Marija Strojnik "Effect of the coating-thickness error on the performance of an optical component", Proc. SPIE 2553, Infrared Spaceborne Remote Sensing III, (29 September 1995); https://doi.org/10.1117/12.221394

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