【摘要】 本文对非对称激励的DFWM装置,在0.6943μm和1.06μm两个波段上,就入射光脉冲程差对DFWM相位共轭特性的影响进行了实验和理论研究。结果表明:E₃与E₁（E₂）光脉冲程差对相位共轭反射系数的影响,由激光的有限相干长度决定;E₂与E₁（E₃）光脉冲程差对相位共轭反射系数的影响,反映了非线性介质内光栅的弛豫特性,实验和理论都指出了所产生的相位共轭波强度具有振荡特性,其结果与参考文献[1]有某些差别。更多还原

【Abstract】 The effects of the path difference of optical pulses on DFWM phase conjugate chara-cteristic have been studied experimentally and theoretically with the unsymmetrical excit-ing DFWM setup at λ= 0.6943μm and λ=1.06μm. The effects of optical path difference ofinput pulses E₃ and E₁ （or E₂） on phase conjugate reflectivity depend on the coherent le-ngth of laser. The effects of optical path differnece of input pulses E₂ and E₁ （or E₃）reflect the relaxation characteristic of the grating in the nonlinear medium. It is demon-strated experimentally and theoretically that the intensity of the phase conjugate wavepossesses the oscillating characteristic, the results which we obtained are somewhat differ-ent from that in ref. [1].更多还原