基于直边衍射高斯激光驻波光学势阱仿真

Simulation of optical potential of Gaussian laser standing wave by diffraction of straight edge

为了研究基片边缘对激光汇聚原子光学势阱的影响,基于标量光学理论,采用数值计算对基片衍射与否两种情况下,高斯激光驻波场光学势阱进行了仿真,通过三维和截面仿真图充分显示了两种情况下高斯激光光学势阱的异同.详细研究了激光中轴线与基片表面距离、激光束腰和反射镜之间的距离对光学势阱的影响.

In order to study the effect of substrate on the focusing laser beam in atom lithograph, the simulations of optical potential of Gaussian laser standing wave in the presence and the absence of straight edge diffraction are performed based on the scalar optical theory. The similarities and differences in optical potential between the diffractive Gaussian and non-diffractive Gaussian laser beam are fully indicated by the three-dimensional and cross-sectional figure. The effects of the distance between laser axis and substrate, the distance between laser waist and reflective mirror are fully studied.