超高真空中银表面垂直谐波电流的实验测量

Determination of normal harmonic current at silver surface under ultrahigh vacuum condition

在超高真空的条件下,测量了清洁、自由银表面产生的光学二次谐波随基波电矢量与入射面之间夹角(?)的变化,从而通过理论公式,求得由Rudnick和Stern引入的,用于衡量垂直面电流密度的唯象参数a的值,在入射基频光波长为1.064μm时,被测定为-4.0±0.8.

We have measured the optical second-harmonic generation at free silver surface under ultrahigh vacuum condition. The value of the phenomenologioal parametre 'a', introduced by Rudriok and Stern as a measure of the normal surface current, is determined to be - 4.0±0.8 at inoiden 1.064μm fundamental radiation.