When this article was originally published in High Power Laser Science and Engineering it omitted to include a couple of supplementary material files.These have now been published online.The publisher apologises for t...When this article was originally published in High Power Laser Science and Engineering it omitted to include a couple of supplementary material files.These have now been published online.The publisher apologises for this error.展开更多
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 an...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.展开更多
文摘When this article was originally published in High Power Laser Science and Engineering it omitted to include a couple of supplementary material files.These have now been published online.The publisher apologises for this error.
基金funding from the EU’s HORIZON-INFRA-2022-TECH-01 call under grant agreement number 101095207.
文摘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.
