在不同激光脉宽下的高次谐波

用数值计算方法计算了不同强激光脉冲宽度下高次谐波的产生.我们发现对于激光场强度不高,不能有效电离初态的激光场,长脉冲宽度可以更有效产生高次谐波;而对于高场强的激光场,由于它能够在几个光学周期之内把原子的初态全部电离,所以短脉冲的激光场能够更有效产生高次谐波.     

Equal-power 4m-th power sum squeezing of generalized magnetic-field component in vacuum state immiting four-state superposition multimode entangled state light field

By utilizing multimode squeezed states theory, we study the generalized nonlinear equal-power higherpower sum squeezing properties of the generalized magnetic-field component in four-state superposition multimode entangled state light field ｜ψ1^（4）〉q. The state is composed of multimode vacuum state, multimode coherent state and its contrary state, multimode imaginary coherent state. It is found that the state ｜ψ1^（4）〉q is a type of four-state superposition multimode nonclassical light field, and under certain fixed conditions, the generalized magnetic-field component in the state ｜ψ1^（4）〉q can display generalized nonlinear equal-power 4m-th power sum squeezing effects which change periodically.     

五态叠加MSCS光场中广义磁场的等幂4m次和压缩

利用多模压缩态理论,研究了由多模真空态、多模复共轭相干态、多模复共轭虚相干态以及后两者的相反态的线性叠加所组成的一种五态叠加多模薛定谔猫态光场|Ψ(5)＞q中广义磁场分量的等幂次高次和压缩特性.结果发现:态|Ψ(5)＞q是一种典型的五态叠加多模非经典光场;在一定条件下,态|Ψ(5)＞q的广义磁场分量可呈现出周期性变化的广义非线性等幂4m次和压缩效应.