Predictive models for the Strehl ratio of diamond-machined optics
This paper provides a practical connection between the Strehl ratio as an optical performance metric and manufacturing parameters for diamond-machined optics. The choice of fabrication parameters impacts residual mid-spatial frequency groove structures over the part's surface, which reduce opti...
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| Published in | Applied optics. Optical technology and biomedical optics Vol. 58; no. 12; p. 3272 |
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| Main Authors | , , , |
| Format | Journal Article |
| Language | English |
| Published |
United States
20.04.2019
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| Online Access | Get more information |
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| Summary: | This paper provides a practical connection between the Strehl ratio as an optical performance metric and manufacturing parameters for diamond-machined optics. The choice of fabrication parameters impacts residual mid-spatial frequency groove structures over the part's surface, which reduce optical performance. Connections between the Strehl ratio and the fabrication parameters are studied using rigorous Rayleigh-Sommerfeld simulations for a sample optical system. The connections are generalized by incorporating the shape of diamond-machined groove structures and the effects of optical path differences for both transmissive and reflective optics. This work validates the analytical representation of the Strehl ratio as a Fourier transform of a probability density that relates to surface errors. The result is a practical tool that can be used to guide the choice of machining parameters to achieve a targeted optical performance. |
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| ISSN: | 2155-3165 |
| DOI: | 10.1364/AO.58.003272 |