Haines M G
Blackett Laboratory, Imperial College, London SW7 2BW, England.
Phys Rev Lett. 2001 Sep 24;87(13):135005. doi: 10.1103/PhysRevLett.87.135005. Epub 2001 Sep 11.
In circularly polarized light the spins of the photons are aligned. When a short intense pulse of circularly polarized laser light is absorbed by a plasma, a torque is delivered initially to the electron species, resulting primarily in an opposing torque from an induced azimuthal electric field. This electric field, in general, has a curl and leads to the generation of an axial magnetic field. It also is the main means for transferring angular momentum to the ions. The time-dependent magnetic field has a magnitude proportional to the transverse gradient of the absorbed intensity but inversely proportional to the electron density, in contrast to earlier theories of the inverse Faraday effect.
在圆偏振光中，光子的自旋是对齐的。当等离子体吸收短而强的圆偏振激光脉冲时，最初会给电子群体施加一个扭矩，主要产生来自感应方位电场的反向扭矩。一般来说，这个电场有一个旋度，并导致产生一个轴向磁场。它也是将角动量传递给离子的主要方式。与早期的逆法拉第效应理论不同，随时间变化的磁场的大小与吸收强度的横向梯度成正比，但与电子密度成反比。
