BaTiO_3:Ce自抽运相位共轭产生机理随抽运光入射参数的变化  

A Study of Mechanisms of Self-pumped Phase Conjugation in BaTiO_3:Ce on Pump Beam Parameters

作　　者：刘继芳[1] 李育林[2] 忽满利[2] 张培琨[2] 乔学光[2] 

机构地区：[1]西安电子科技大学501教研室,西安710071 [2]中国科学院西安光机所,西安710068

出　　处：《中国激光》1999年第11期1016-1020,共5页Chinese Journal of Lasers

摘　　要：实验发现当抽运光波长为514．5nm时，随入射到光折变晶体的抽运光参数（光斑尺寸，入射位置和入射角度）改变，BaTiO3∶Ce自抽运相位共轭的形成机制在双作用区四波混频（FWM－TIR），四波混频-受激背向散射（FWM-SPB）和FWM-TIR＋FWM-SPB之间转变。An invertigation of mechanisms of self-pumped phase conjugation (SPPC) in BaTio3: Ce crystal in the green, λ = 514. 5 nm on pump beam parameters, such as the beam diameter, the incidence angle and the position was reported. It was found that the SPPC mechanism changed from a 'cat' (FWM-TIM) mechanism to a stimulated photorefractive backscattering and four- wave-mixing (FWM- SPB) when the pump beam diameter, the incidence angle and position were varied, with a transition of FWM-TIR + FWM-SPB mechanism coexisted.

关 键 词：自抽运相位共轭 相位共轭反射率 相共轭形成 

分 类 号：TN241[电子电信—物理电子学]