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This article is cited in 4 scientific papers (total in 4 papers)
Control of laser radiation parameters
New adaptive optics control strategy for petawatt-class laser chains
N. Varkentina, G. Dovillaire, J. Legrand, G. Beaugrand, I. Stefanon, P. Treimany, X. Levecq Imagine Optic, France
Abstract:
A new generation of ultra-high intensity femtosecond petawatt- and above-class lasers requires new approaches to wavefront corrections. New challenges for adaptive optics consist in overcoming the constraints of potentially bigger diameters, larger amplitude aberrations, faster optics, higher risk of damaging optical components and faster and easier maintenance. Here we present a new technology of a mechanical deformable mirror, which has a large stroke, high temporal stability, low hysteresis, no printthrough effect, easy, safe and fast maintenance and an operating frequency up to 10 Hz. We propose the full correction of the final focal spot in the target chamber by a combination of a standard adaptive optics system, a simple focal plane camera and a phase retrieval correction process. We test the reliability of the correction system in terms of intensity variation and wavefront stability. We further verify correction robustness of the method on a large spectral bandwidth and finally perform a focal spot correction on a terawatt laser system in both low and high-power regimes.
Keywords:
high-power lasers, adaptive optics, laser beam shaping, correction of wavefront aberrations.
Received: 15.05.2017
Citation:
N. Varkentina, G. Dovillaire, J. Legrand, G. Beaugrand, I. Stefanon, P. Treimany, X. Levecq, “New adaptive optics control strategy for petawatt-class laser chains”, Kvantovaya Elektronika, 47:8 (2017), 711–717 [Quantum Electron., 47:8 (2017), 711–717]
Linking options:
https://www.mathnet.ru/eng/qe16664 https://www.mathnet.ru/eng/qe/v47/i8/p711
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Abstract page: | 201 | Full-text PDF : | 73 | References: | 24 | First page: | 11 |
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