Investigations of the fundamental quantum noise properties of resonant-cavity light-emitting diodes (RCLEDS)

摘要

We present first results of the investigations of the quantum noise properties of resonant-cavity light-emitting diodes (RCLEDS). We obtain a quantum noise of up to -0.07dB below the shot noise quantum limit already at moderate pump levels and when being pumped by a quiet current source. This amount of observed sub-shot noise emission is in accordance with the quantum efficiency of the devices. This Sub-Poisson intensity noise of RCLEDs together with their narrow beam characteristics make them very attractive for applications in photonics and metrology.