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9 June 2017 Solution for testing large high-power laser lenses having long focal length (Conference Presentation)
Denis Fappani, Monique IDE
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Proceedings Volume 10238, High-Power, High-Energy, and High-Intensity Laser Technology III; 1023804 (2017) https://doi.org/10.1117/12.2270918
Event: SPIE Optics + Optoelectronics, 2017, Prague, Czech Republic
Abstract
Many high power laser facilities are in operation all around the world and include various tight optical components such as large focussing lenses. Such lenses exhibit generally long focal lengths which induces some issues for their optical testing during manufacturing and inspection. Indeed, their transmitted wave fronts need to be very accurate and interferometric testing is the baseline to achieve that. But, it is always a problem to manage simultaneously long testing distances and fine accuracies in such interferometry testing. Taking example of the large focusing lenses produced for the Orion experimentation at AWE (UK), the presentation will describe which kind of testing method has been developed to demonstrate simultaneously good performances with sufficiently good repeatability and absolute accuracy. Special emphasis will be made onto the optical manufacturing issues and interferometric testing solutions. Some ZEMAX results presenting the test set-up and the calibration method will be presented as well. The presentation will conclude with a brief overview of the existing “state of the art” at Thales SESO for these technologies.
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Denis Fappani and Monique IDE "Solution for testing large high-power laser lenses having long focal length (Conference Presentation)", Proc. SPIE 10238, High-Power, High-Energy, and High-Intensity Laser Technology III, 1023804 (9 June 2017); https://doi.org/10.1117/12.2270918
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KEYWORDS
Lenses
High power lasers
Interferometry
Optics manufacturing
Inspection
Optical components
Optical testing
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