A new method is developed for suppressing thermally induced wavefront distortions of the radiation in the active element of disk geometry.The method is based on controlling radial temperature gradients in the active e...A new method is developed for suppressing thermally induced wavefront distortions of the radiation in the active element of disk geometry.The method is based on controlling radial temperature gradients in the active element using a profiled heatsink.An active element with a zero thermal lens developed on the basis of numerical simulation was experimentally demonstrated in a disk laser head.Higher-order phase aberrations in the active element with a profiled heatsink were weaker than in the element with a flat heatsink.Using this method,a thermal-lens-free active-mirror ytterbium-doped yttrium aluminum garnet amplifier with an output energy of 54 mJ at an average pump power of 100 W and a repetition rate of 106 Hz was implemented.展开更多
The eXawatt Center for Extreme Light Studies project aimed to create a large scientific infrastructure based on lasers with giant peak power.The project relies on the significant progress achieved in the last decade.T...The eXawatt Center for Extreme Light Studies project aimed to create a large scientific infrastructure based on lasers with giant peak power.The project relies on the significant progress achieved in the last decade.The planned infrastructure will incorporate a unique light source with a pulse power of 600 PW using optical parametric chirped pulse amplification in large-aperture KD_(2)PO_(4),deuterated potassium dihydrogen phosphate crystals.The interaction of such laser radiation with matter represents a completely new fundamental physics.The direct study of the space-time structure of vacuums and other unknown phenomena at the frontier of high-energy physics and the physics of superstrong fields will be challenged.Expected applications will include the development of compact particle accelerators,the generation of ultrashort pulses of hard X-ray and gamma radiation for material science enabling one to probe material samples with unprecedented spatial and temporal resolution,the development of new radiation and particle sources,etc.The paper is translation from Russian[Kvantovaya Elektronika 53,95(2023)].展开更多
基金supported by the State Research Task for the Institute of Applied Physics,Russian Academy of Sciences(Project No.FFUF-2024-0043)by the scientific program of the National Center for Physics and Mathematics(project‘Physics of High Energy Densities.Stage 2023-2025’).
文摘A new method is developed for suppressing thermally induced wavefront distortions of the radiation in the active element of disk geometry.The method is based on controlling radial temperature gradients in the active element using a profiled heatsink.An active element with a zero thermal lens developed on the basis of numerical simulation was experimentally demonstrated in a disk laser head.Higher-order phase aberrations in the active element with a profiled heatsink were weaker than in the element with a flat heatsink.Using this method,a thermal-lens-free active-mirror ytterbium-doped yttrium aluminum garnet amplifier with an output energy of 54 mJ at an average pump power of 100 W and a repetition rate of 106 Hz was implemented.
基金supported by the Ministry of Science and Higher Education of the Russian Federation(Project No.0030-2021-0015)
文摘The eXawatt Center for Extreme Light Studies project aimed to create a large scientific infrastructure based on lasers with giant peak power.The project relies on the significant progress achieved in the last decade.The planned infrastructure will incorporate a unique light source with a pulse power of 600 PW using optical parametric chirped pulse amplification in large-aperture KD_(2)PO_(4),deuterated potassium dihydrogen phosphate crystals.The interaction of such laser radiation with matter represents a completely new fundamental physics.The direct study of the space-time structure of vacuums and other unknown phenomena at the frontier of high-energy physics and the physics of superstrong fields will be challenged.Expected applications will include the development of compact particle accelerators,the generation of ultrashort pulses of hard X-ray and gamma radiation for material science enabling one to probe material samples with unprecedented spatial and temporal resolution,the development of new radiation and particle sources,etc.The paper is translation from Russian[Kvantovaya Elektronika 53,95(2023)].
