双色相干场高次谐波

通过数值求解一维含时薛定谔方程，研究了激光频率对谐波辐射的影响以及双色相干场（基频光与其二倍频光或三倍频光）作用于原子时的谐波辐射行为。结果表明，在其它条件相同时，用低频入射光可获得更高次谐波，但转换效率较低，高频入射光转换效率较高，但只能获得较低次谐波，基频光及其三倍频光同时作用于原子，谐波次数和转换效率都有所提高。基频光及其二倍频光同时作用于原子，不但谐波次数增多，转换效率提高，重要是的除了通

Spatioangularly Multiplexed Three Dimensional Holographic Disks

A new three dimensional holographic disk scheme based on the spatioangular multiplexing is proposed. The principle and feasibility of this scheme are analysed by using a simplified ray optics method. It is shown that this scheme has potential applications for implementing holographic storage with a high capacity and high data transfer rate, as well as a relatively simple read/write system.