Roudnev Vladimir, Esry B D, Ben-Itzhak I
J. R. Macdonald Laboratory, Kansas State University, Manhattan, Kansas 66506, USA.
Phys Rev Lett. 2004 Oct 15;93(16):163601. doi: 10.1103/PhysRevLett.93.163601. Epub 2004 Oct 13.
Carrier-envelope phase difference effects in the dissociation of the HD+ molecular ion in the field of an intense, linearly polarized, ultrashort laser pulse are studied in the framework of the time-dependent Schrödinger equation. We consider a reduced-dimensionality model in which the nuclei are free to vibrate along the field polarization and the electrons move in two dimensions. The laser has a central wavelength of 790 nm and a pulse length of 10 fs with intensities in the range 6x10(14) to 9x10(14) W/cm(2). We find that the angular distribution of dissociation to p+D and H+d can be controlled by varying the phase difference, generating differences between the dissociation channels of more than a factor of 2. Moreover, the asymmetry is nearly as large for H+2 dissociation.
在含时薛定谔方程的框架下，研究了在强的、线偏振的超短激光脉冲场中，HD⁺分子离子解离过程中的载波包络相位差效应。我们考虑一个降维模型，其中原子核可沿场偏振方向自由振动，电子在二维空间中运动。激光的中心波长为790 nm，脉冲长度为10 fs，强度范围为6×10¹⁴至9×10¹⁴ W/cm²。我们发现，通过改变相位差，可以控制解离为p + D和H + d的角分布，使得解离通道之间的差异超过2倍。此外，对于H₂⁺解离，这种不对称性几乎同样大。
