To develop III-V integrated light sources for communications, information technologies, and sensing. Our main goals are to increase the speed and bit-rate, reduce the power consumption, and implement new functionalities. To do so, we explore novel materials and laser geometries, as well as new laser emission regimes, at the heart of various devices such as Quantum Dot-based EELs or VECSELs in the telecom wavelength range, nitride-based micro-emitters and nitride-based laser diodes in the UV /visible range. Targeted devices are high-frequency, high-power, low-intensity-noise laser diodes; frequency combs generators; small-footprint, low-threshold lasers; light sources for fiber-optics instrumentation and sensors.