In this report,we start from Lagrange equation and analyze theoretically the electron dynamics in electromagnetic field.By solving the relativistic government equations of electron,the trajectories of an electron in p...In this report,we start from Lagrange equation and analyze theoretically the electron dynamics in electromagnetic field.By solving the relativistic government equations of electron,the trajectories of an electron in plane laser pulse,focused laser pulse have been given for different initial conditions.The electron trajectory is determined by its initial momentum,the amplitude,spot size and polarization of the laser pulse.The optimum initial momentum of the electron for LSS(laser synchrotron source)is obtained.Linear polarized laser is more advantaged than circular polarized laser for generating harmonic radiation.展开更多
When a relativistic laser pulse of high photon density interacts with a specially tailored thin foil target,a strong torque is exerted on the resulting spiral-shaped foil plasma,or"light fan".Because of its ...When a relativistic laser pulse of high photon density interacts with a specially tailored thin foil target,a strong torque is exerted on the resulting spiral-shaped foil plasma,or"light fan".Because of its structure,the latter can gain significant orbital angular momentum(OAM),and the opposite OAM is imparted to the reflected light,creating a twisted relativistic light pulse.Using such a relativistic LaguerreGaussian(LG)laser interaction with a solid foil,we can get intense high order vortex harmonics.Besides that,proton acceleration using LG laser and hollow screw-like drill in plasma using LG laser are studied.All interaction scenarios are demonstrated by particle-in-cell simulation as well as analytical modeling,and should be verifiable in the laboratory.As important characteristics,twisted relativistic light pulse has strong torque and ultra-high OAM density,which may lead to many more new effects.展开更多
基金The project supported by the National Natural Science Foundation of China(No.10375083)National High-Technology ICF Committee in Chinathe National key Basic Research Special Foundation(No.TG1999075206-2)
文摘In this report,we start from Lagrange equation and analyze theoretically the electron dynamics in electromagnetic field.By solving the relativistic government equations of electron,the trajectories of an electron in plane laser pulse,focused laser pulse have been given for different initial conditions.The electron trajectory is determined by its initial momentum,the amplitude,spot size and polarization of the laser pulse.The optimum initial momentum of the electron for LSS(laser synchrotron source)is obtained.Linear polarized laser is more advantaged than circular polarized laser for generating harmonic radiation.
基金supported by the Ministry of Science and Technology (Grant Nos.2011DFA11300and 2011CB808104)the National Natural Science Foundation of China(Grant Nos.61221064,11125526, 11335013and 11127901)
文摘When a relativistic laser pulse of high photon density interacts with a specially tailored thin foil target,a strong torque is exerted on the resulting spiral-shaped foil plasma,or"light fan".Because of its structure,the latter can gain significant orbital angular momentum(OAM),and the opposite OAM is imparted to the reflected light,creating a twisted relativistic light pulse.Using such a relativistic LaguerreGaussian(LG)laser interaction with a solid foil,we can get intense high order vortex harmonics.Besides that,proton acceleration using LG laser and hollow screw-like drill in plasma using LG laser are studied.All interaction scenarios are demonstrated by particle-in-cell simulation as well as analytical modeling,and should be verifiable in the laboratory.As important characteristics,twisted relativistic light pulse has strong torque and ultra-high OAM density,which may lead to many more new effects.
