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Title: New adaptive optics control strategy for petawatt-class laser chains

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 print-through 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. (paper)

Authors:
; ; ; ; ; ;
Publication Date:
OSTI Identifier:
22725955
Resource Type:
Journal Article
Journal Name:
Quantum Electronics (Woodbury, N.Y.)
Additional Journal Information:
Journal Volume: 47; Journal Issue: 8; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-7818
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; AMPLITUDES; CAMERAS; CONTROL; CORRECTIONS; HAZARDS; HYSTERESIS; LASERS; LIMITING VALUES; MAINTENANCE; MIRRORS; OPTICAL EQUIPMENT; OPTICS; RELIABILITY; STABILITY; TARGET CHAMBERS; ACCELERATOR EXPERIMENTAL FACILITIES

Citation Formats

Varkentina, N., Dovillaire, G., Legrand, J., Beaugrand, G., Stefanon, I., Treimany, P., and Levecq, X. New adaptive optics control strategy for petawatt-class laser chains. United States: N. p., 2017. Web. doi:10.1070/QEL16429.
Varkentina, N., Dovillaire, G., Legrand, J., Beaugrand, G., Stefanon, I., Treimany, P., & Levecq, X. New adaptive optics control strategy for petawatt-class laser chains. United States. doi:10.1070/QEL16429.
Varkentina, N., Dovillaire, G., Legrand, J., Beaugrand, G., Stefanon, I., Treimany, P., and Levecq, X. Fri . "New adaptive optics control strategy for petawatt-class laser chains". United States. doi:10.1070/QEL16429.
@article{osti_22725955,
title = {New adaptive optics control strategy for petawatt-class laser chains},
author = {Varkentina, N. and Dovillaire, G. and Legrand, J. and Beaugrand, G. and Stefanon, I. and Treimany, P. and Levecq, X.},
abstractNote = {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 print-through 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. (paper)},
doi = {10.1070/QEL16429},
journal = {Quantum Electronics (Woodbury, N.Y.)},
issn = {1063-7818},
number = 8,
volume = 47,
place = {United States},
year = {2017},
month = {9}
}