Generally, under these conditions we can form bright bright, dark dark and bright dark polychromatic light photovoltaic spatial solitons in the crystal.
一般而言，在满足上述条件的情况下，双色光可以形成双色光亮孤子、双色光暗孤子、一亮一暗孤子。
2
The properties of nonlinear crystal BBO is presented. The walk-off Angle and the spatial walk-off effect, the group velocity mismatch and the temporal walk-off effect are discussed.
Both the spatial distribution of the pump source and the absorption properties of crystal decides the spatial distribution of the absorbed pump light in the crystal and the heat consumption.