电光感生静态等效透镜

Electro-optically induced static lens

本文提出了一种关于稳恒电场下由二阶电光效应感生等效透镜的理论,并分析了电场的空间特征、材料的内禀对称性及其几何形状等因素可能产生的影响.初步的估算表明,对子m3m类晶体,在10~4～10~5V的直流电压下,可观察到明显的聚焦效应.

Quadratic Electro-optic effects. The effects are induced in a centrosymmetrio nonlinear material by static electric fields produced in an axially symmetric electrodes system as those are used in a Penning trap. Analysis shows that we can get different type of effective lena with materials having different point group symmetry and geometric arrangement. We pay attention especially to those materials having m3m symmetry, which can be used to create effective static cylindrical lens. Estimation shows that with a piece of crystal of several centimetres size and a direct voltage of 104-105 Volts we can obtain a focal length of tens centimetres in the case of line focus.