双光束相干控制产生多次谐波的实验验证  

An experimental proof for the fifth-order harmonic generation by a coherent-controlled two-pulse optical field

作　　者：刘婷婷[1] 王大威[1] 陆伟新[1] 孙泉[1] 杨宏[1] 蒋红兵[1] 龚旗煌[1] 

机构地区：[1]北京大学物理系,人工微结构和介观物理国家重点实验室,北京100871

出　　处：《物理学报》2003年第4期864-869,共6页Acta Physica Sinica

基　　金：国家重点基础研究项目特别基金 (批准号 :G19990 75 2 0 7);国家自然科学基金 (批准号 :198840 0 1;10 10 40 0 3和 90 10 10 2 7)资助的课题~~

摘　　要：利用两束相干度可改变的飞秒脉冲光对产生的五次谐波的强度特性进行了研究 ,发现谐波信号的强度随相干程度的增大而增加 ,谐波信号的最大值相对于相干零点 (双光束相干度最大处 )是非对称的 ,从而证明了合成的激光脉冲波形变化对谐波信号的影响 .We have studied experimentally the intensity characteristic of the fifth-order harmonic radiation produced by two coherent femtosecond laser pulses with a changeable relative phase. The intensities of the harmonic generation are found to increase with the coherent degree. The maximum intensity of harmonies exhibits an asymmetric characteristic with respect to the point where the two components are superposed completely. This fact verifies the influence of deformation of the merged beam on the harmonic generation. Meanwhile, we have carried out some fundamental experiments, based on the theory of stimulated emission.

关 键 词：双光束相干控制 多次谐波 飞秒脉冲光 强度特性 波形变化 受激放大 激光 

分 类 号：TN24[电子电信—物理电子学]