Résumé
We report low and medium frequency optical noise measurements on very-high-power fibered 1460nm-Pump Lasers (P > 200mW) designed for Raman Amplification. These Fabry-Perot Lasers exhibit spectra from a quite monomode situation (Side Mode Suppression Ratio Pz ~ 10dB) at near threshold current injection (Ithreshold ~ 28mA ) up to very multimode spectra (5nm Full Width at Half Magnitude) at very high biases (ILasser ~ 1000mA). In this paper, we have to focus on two main things : on one hand, the low and medium frequency noise behavior of the laser itself and on the other hand the measurement data post-treatment.