Multimode dynamics in a semiconductor laser with optical injection

An experimental study of multimode dynamics in a two-mode semiconductor laser with optical injection is presented. The device we consider is a specially engineered two-colour Fabry-Perot laser diode [Eblana Photonics] with a large (THz) primary mode spacing. At a fixed injected power level, we vary the detuning of the injected field from the long wavelength mode of the device. The optical spectra of the two primary modes are shown as a function of the frequency detuning of the injected signal in Fig. 1 (left).