SOA - Semiconductor Optical Amplifier model - simulation with PICWAVE software
Gain saturation, explained by RP Photonics Encyclopedia; compression, optical amplification, gain compression, Frantz-Nodvik equation
optics - Homogeneous gain saturation and single-longitudinal-mode lasing - Physics Stack Exchange
Saturated gain in GaN epilayers studied by variable stripe length technique Rui Li Journal Club, Electrical Engineering Boston University J. Mickevičiusa. - ppt download