Long-ranged surface plasmon modes on the interface between super-thin metallic filmand media were excited by using the angle-scanning ATR method, in which the thicknessof metallic film was thinner than 200A.

• 用角度扫描衰减全反射方法激励了厚度小于200A的超薄金属膜中的长程表面等离子激元模。