Figure Correction of Glass Mirrors Using Ultrafast Lasers to Generate Controllable Stress

Brandon D. Chalifoux; Ian J. Arnold; Kevin A. Laverty

doi:10.1364/OFT.2021.OW4B.2

OSA Optical Design and Fabrication 2021 (Flat Optics, Freeform, IODC, OFT)
OSA Technical Digest (Optica Publishing Group, 2021),
paper OW4B.2
•https://doi.org/10.1364/OFT.2021.OW4B.2

Figure Correction of Glass Mirrors Using Ultrafast Lasers to Generate Controllable Stress

Brandon D. Chalifoux, Ian J. Arnold, and Kevin A. Laverty

Optical Fabrication and Testing 2021

Washington, DC United States
27 June–1 July 2021
ISBN: 978-1-943580-88-0

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Laser Processing (OW4B)

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B. D. Chalifoux, I. J. Arnold, and K. A. Laverty, "Figure Correction of Glass Mirrors Using Ultrafast Lasers to Generate Controllable Stress," in OSA Optical Design and Fabrication 2021 (Flat Optics, Freeform, IODC, OFT), F. Capasso, W. Chen, P. Dainese, J. Fan, J. DeGroote Nelson, F. Duerr, J. Rogers, J. Rolland, P. Clark, R. Pfisterer, H. Rehn, S. Thibault, M. Jenkins, D. Wook Kim, and N. Trela-McDonald, eds., OSA Technical Digest (Optica Publishing Group, 2021), paper OW4B.2.

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Abstract

We use an ultrafast laser to correct figure errors in float glass mirrors by generating stress within the substrates, causing bending. We show 5-15× height reduction in one cycle, and high equivalent material removal rate.

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