Monolithic duplex layer aluminum mirror structure for low surface sag error

Jimin Han; Joong Kyu Ham; Geon Hee Kim; Bongkon Moon; Dae-Hee Lee; Soojong Pak

doi:10.1117/12.2676691

28 September 2023 Monolithic duplex layer aluminum mirror structure for low surface sag error

Jimin Han, Joong Kyu Ham, Geon Hee Kim, Bongkon Moon, Dae-Hee Lee, Soojong Pak

Proceedings Volume 12669, Optomechanical Engineering 2023; 126690J (2023) https://doi.org/10.1117/12.2676691
Event: SPIE Optical Engineering + Applications, 2023, San Diego, California, United States

Conference Poster

Abstract

We suggest a novel monolithic design for metal mirror mounting to reduce the surface deformation by the assembly stress. The mirror has a duplex layer to suppress the stress transport and a triangle ear structure for assembly. The reflective surface is on a front layer and a back layer consists of the triangle ears. We perform the structural analysis and manufacture the mirrors and measure the z-sag via UA3P to verify the effectiveness of the design. Comparing the two results, we find out that the design can reduce surface deformation by external stress as we expect.

Citation Download Citation

Jimin Han, Joong Kyu Ham, Geon Hee Kim, Bongkon Moon, Dae-Hee Lee, and Soojong Pak "Monolithic duplex layer aluminum mirror structure for low surface sag error", Proc. SPIE 12669, Optomechanical Engineering 2023, 126690J (28 September 2023); https://doi.org/10.1117/12.2676691

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