二维圆形白光光生伏打暗空间孤子

光学空间孤子的研究实现了由光导向光这一非线性光学长期以来的目标，为此，自光光折变空间孤子近年来受到人们的广泛关注。实验使用白炽灯泡作光源，在1cm厚的光生伏打光折变自散焦LiNbO3：Fe晶体中，观察了用振幅掩模产生的二维圆形白光光生伏打暗空间孤子，结果表明：二维圆形白光光生伏打暗空间孤子感应的波导能够很好地导向白光，并可长距离传播；完全非相干白光暗空间孤子具有控制和导向光的能力。

Two-dimensional circular white-light photovoltaic dark spatial solitons

The study on optical spatial solitons has achieved the goal of beams being guided by beams, thus, white-light photorefractive spatial solitons have caused wide attention recently. In the experiment, 2D circular white light photovohaic dark spatial solitons are observed with amplitude mask in l cm long-LiNbO3 ：Fe crystal using fully incoherent white light emitted from an incandescent bulb. The experimental results show that the waveguide induced by the 2D circular white light photovohaic dark spatial solitons can guide white light beams and propagate for a long distance, and that the white light dark spatial solitons have the ability to control and guide beams.