Relative intensity noise and intrinsic properties of RF mounted interband cascade laser

Interband cascade lasers are semiconductor emitting in the mid-infrared domain but relying on interband transitions, contrary to their intersubband counterparts, quantum lasers. Our experimental study of relative intensity noise a multi-mode laser at 4.1 ?m shows that room-temperature structure exhibits relaxation frequency GHz range. We demonstrate that, far above threshold current, increases with bias and our simulations good agreement efforts. Fitting resonances gives access several intrinsic parameters under such as differential gain, compression K-factor. This is clear step for understanding dynamics interplays structures, which means non-linear modulation bandwidth limitations