Generation of 170 GHz optical sidebands of a single-mode semiconductor laser by nonlinear intracavity interaction

We demonstrate the generation of optical sidebands with a frequency separation of 170 GHz by nonlinear optical intracavity interaction of light from a 1.3 μm distributed feedback laser with the population pulsations caused by the longitudinal mode beating of a broad-area laser and demonstrate a cavity-enhanced response by approximately 45 dB.