Apollon Real-Time Adaptive Optics: astronomy-inspired wavefront stabilization in ultraintense lasers
Traditional wavefront control in high-energy, high-intensity laser systems usually lacks real-time capability, failing to address dynamic aberrations. This limits experimental accuracy due to shot-to-shot fluctuations and necessitates long cool-down phases to mitigate thermal effects, particularly a...
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| Format: | Article |
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Cambridge University Press
2025-01-01
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| Series: | High Power Laser Science and Engineering |
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| Online Access: | https://www.cambridge.org/core/product/identifier/S2095471925000167/type/journal_article |
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| author | J. B. Ohland N. Lebas V. Deo O. Guyon F. Mathieu P. Audebert D. Papadopoulos |
| author_facet | J. B. Ohland N. Lebas V. Deo O. Guyon F. Mathieu P. Audebert D. Papadopoulos |
| author_sort | J. B. Ohland |
| collection | DOAJ |
| description | Traditional wavefront control in high-energy, high-intensity laser systems usually lacks real-time capability, failing to address dynamic aberrations. This limits experimental accuracy due to shot-to-shot fluctuations and necessitates long cool-down phases to mitigate thermal effects, particularly as higher repetition rates become essential, for example, in inertial fusion research. This paper details the development and implementation of a real-time capable adaptive optics system at the Apollon laser facility. Inspired by astronomical adaptive optics, the system uses a fiber-coupled 905 nm laser diode as a pilot beam that allows for spectral separation, bypassing the constraints of pulsed lasers. A graphics processing unit-based controller, built on the open-source Compute And Control for Adaptive Optics framework, manages a loop comprising a bimorph deformable mirror and a high-speed Shack–Hartmann sensor. Initial tests showed excellent stability and effective aberration correction. However, integration into the Apollon laser revealed critical challenges unique to the laser environment that must be resolved to ensure safe operation with amplified shots. |
| format | Article |
| id | doaj-art-3a99bdf36bf249afb4e604ca65cd53f8 |
| institution | Kabale University |
| issn | 2095-4719 2052-3289 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Cambridge University Press |
| record_format | Article |
| series | High Power Laser Science and Engineering |
| spelling | doaj-art-3a99bdf36bf249afb4e604ca65cd53f82025-08-20T03:45:15ZengCambridge University PressHigh Power Laser Science and Engineering2095-47192052-32892025-01-011310.1017/hpl.2025.16Apollon Real-Time Adaptive Optics: astronomy-inspired wavefront stabilization in ultraintense lasersJ. B. Ohland0https://orcid.org/0000-0002-1328-2188N. Lebas1V. Deo2O. Guyon3F. Mathieu4P. Audebert5https://orcid.org/0000-0002-1330-3946D. Papadopoulos6https://orcid.org/0000-0001-7163-0761Laboratoire d’Utilisation des Lasers Intenses, Ecole Polytechnique, Palaiseau Cedex, France GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, GermanyLaboratoire d’Utilisation des Lasers Intenses, Ecole Polytechnique, Palaiseau Cedex, FranceSubaru Telescope, National Astronomical Observatory of Japan, National Institute of Natural Sciences, Hilo, HI, USASubaru Telescope, National Astronomical Observatory of Japan, National Institute of Natural Sciences, Hilo, HI, USA Astrobiology Center of NINS, Osawa, Mitaka, Tokyo, Japan Steward Observatory, University of Arizona, Tucson, AZ, USA College of Optical Sciences, University of Arizona, Tucson, AZ, USALaboratoire d’Utilisation des Lasers Intenses, Ecole Polytechnique, Palaiseau Cedex, FranceLaboratoire d’Utilisation des Lasers Intenses, Ecole Polytechnique, Palaiseau Cedex, FranceLaboratoire d’Utilisation des Lasers Intenses, Ecole Polytechnique, Palaiseau Cedex, FranceTraditional wavefront control in high-energy, high-intensity laser systems usually lacks real-time capability, failing to address dynamic aberrations. This limits experimental accuracy due to shot-to-shot fluctuations and necessitates long cool-down phases to mitigate thermal effects, particularly as higher repetition rates become essential, for example, in inertial fusion research. This paper details the development and implementation of a real-time capable adaptive optics system at the Apollon laser facility. Inspired by astronomical adaptive optics, the system uses a fiber-coupled 905 nm laser diode as a pilot beam that allows for spectral separation, bypassing the constraints of pulsed lasers. A graphics processing unit-based controller, built on the open-source Compute And Control for Adaptive Optics framework, manages a loop comprising a bimorph deformable mirror and a high-speed Shack–Hartmann sensor. Initial tests showed excellent stability and effective aberration correction. However, integration into the Apollon laser revealed critical challenges unique to the laser environment that must be resolved to ensure safe operation with amplified shots.https://www.cambridge.org/core/product/identifier/S2095471925000167/type/journal_articlebeam controladaptive opticsdynamic aberrationsstabilization |
| spellingShingle | J. B. Ohland N. Lebas V. Deo O. Guyon F. Mathieu P. Audebert D. Papadopoulos Apollon Real-Time Adaptive Optics: astronomy-inspired wavefront stabilization in ultraintense lasers High Power Laser Science and Engineering beam control adaptive optics dynamic aberrations stabilization |
| title | Apollon Real-Time Adaptive Optics: astronomy-inspired wavefront stabilization in ultraintense lasers |
| title_full | Apollon Real-Time Adaptive Optics: astronomy-inspired wavefront stabilization in ultraintense lasers |
| title_fullStr | Apollon Real-Time Adaptive Optics: astronomy-inspired wavefront stabilization in ultraintense lasers |
| title_full_unstemmed | Apollon Real-Time Adaptive Optics: astronomy-inspired wavefront stabilization in ultraintense lasers |
| title_short | Apollon Real-Time Adaptive Optics: astronomy-inspired wavefront stabilization in ultraintense lasers |
| title_sort | apollon real time adaptive optics astronomy inspired wavefront stabilization in ultraintense lasers |
| topic | beam control adaptive optics dynamic aberrations stabilization |
| url | https://www.cambridge.org/core/product/identifier/S2095471925000167/type/journal_article |
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