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实验研究了三种c向切割的不同掺杂的LiNbO3:Fe晶体中入射光与反射光的耦合情况 .发现沿 -c轴方向入射时透射光与反射光强的准周期振荡行为是光生伏打机制占优势的瞬态能量转移和扩散机制引起的相反方向的能量转移所致 ,不是光生伏打场的表面击穿引起的 .当入射光沿 +c方向入射时 ,由于两种机制引起的能量转移方向相同 ,因而不会产生这种振荡
The coupling between incident light and reflected light in three different c-cut LiNbO3: Fe crystals was investigated experimentally.The quasi-periodic oscillatory behavior of transmitted light and reflected light intensity along the -c axis was found to be Photovoltaic Mechanism is dominated by the transient energy transfer and diffusion mechanism caused by the opposite direction of energy transfer, not the photovoltaic breakdown caused by the surface when the incident light along the + c direction due to the energy caused by the two mechanisms The same direction of transfer, and therefore will not produce such oscillations