Polarization-Dependence of Coulomb Explosion of Co Irradiated with an Intense Femtosecond Laser Pulse
Chen Jian-Xin; Ma Ri; Ren Hai-Zhen; Li Xia; Yang Hong; Gong Qi-Huang; Chen Jian-Xin; State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing 100871; Ma Ri; State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing 100871; Ren Hai-Zhen; State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing 100871; Li Xia; State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing 100871; Yang Hong; State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing 100871; Gong Qi-Huang; State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing 100871
Журнал:
Chinese Physics Letters
Дата:
2003-07-01
Аннотация:
Laser-induced Coulomb explosion of CO is studied experimentally using differently polarized femtosecond laser pulses of 2×10<sup>15</sup> W/cm<sup>2</sup> intensity at λ = 800 nm. The channels of molecular Coulomb explosion are observed to be independent of the laser polarizations. The critical distance R is deduced to be larger for the circularly polarized light in comparison with the linearly polarized light. The initial emissions of C<sup>+</sup>, C<sup>2+</sup>, O<sup>+</sup>, and O<sup>2+</sup> ions are anisotropic for linear polarization and isotropic for circular polarization. The suppression of ionization occurs for the elliptically and circularly polarized lasers.
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