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arXiv 1504.02641physics.optics
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laser脉冲线偏振不同取向下非轴对称光学方案的自聚焦和等离子体通道的形成

Self-focusing and plasma channels formation for non-axisymmetric optical schemes under different orientation of laser pulse linear polarization

A A Ionin, D V Mokrousova, L V Seleznev, D V Sinitsyn, E S Sunchugasheva, N A Fokina

备注：
This paper has been withdrawn by the author due to identification evidence of pulse polarization orientation doesn't affect plasma channel formation by rotating of the polarization via halfwave plate. The reason of the effect is still unclear, but it is connected with the beam orientation
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摘要：

实验研究了线偏振超短激光脉冲在非轴对称光学系统中的成丝现象。我们的实验表明，强烈的影响，激光束的方向上的自聚焦的光束和等离子体的产生过程中的benefiction。在弧矢和弧矢两个焦点上，激光脉冲产生的线等离子体密度的最大值是不同的，并取决于光束的方向。观察到的线性等离子体密度的差异的情况下，叠加的两部分的激光束通过一个两孔光阑取决于光束的方向和通过一个狭缝的共线和正常的狭缝方向相对于光束的方向。在红外和紫外波长域的激光脉冲导致类似的结果。

英文摘要：

Filamentation of linear polarized ultrashort laser pulses in non-axisymmetric optical schemes with preferential directions to the optical axis in dependence on the beam orientation was experimentally studied. Our experiments demonstrated strong influence of a laser beam orientation on self-focusing of the beam and plasma generation during filamentation. Maximum of linear plasma density generated by an astigmatic laser pulse was different in both meridional and sagittal foci and depended on the beam orientation. A difference of linear plasma density was observed in the case of superposition of two parts of the laser beam going through a two-hole diaphragm depending on the beam orientation and through a slit for collinear and normal slit orientation relative to the beam orientation. Laser pulses in IR and UV wavelength domains led to similar result.

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