High quantum efficiency photocathode using surface plasmon resonance

摘要

To improve QE of the photocathode using surface plasmon resonance, we have employed the new arrangement of the photocathode and incident light, where the direction of the surface plasmon coincides with the momentum direction of the emitting electrons. We have achieved the QE by 103 times larger than that of the conventional photocathode using surface plasmon resonance.