TY - JOUR
AU - 
AB - This chapter describes the determination of amplifying parameters in rare–earth–doped optical fiber laser amplifiers. In the context of this review, the system will be analyzed under both continuous–wave (CW) and pulse conditions. A comprehensive analysis has been implemented using the set of coupled propagation rate equations based on the atomic energy structure of dopant as well as the absorption and emission cross sections. Regarding the spectral line broadening associated with a suitable amplification relation, gain and saturation can be acquired for various pumping schemes including co– or coun‐ ter–propagation and the bidirectional modes. It was shown that the gain and saturation properties are strongly dependent on the pump power, dopant concentration, and fiber length mainly due to the dominant effect of the overlapping factor of dual–clad fibers. Keywords: Gain, Saturation, ASE parasitic noises, Broadening, Amplification relation, Filling (overlapping) factor 1. Introduction Recently, intense activities have been devoted to characterize rare–earth–doped double–clad fiber laser amplifiers. Owing to their compactness, superb beam quality, great thermal control, and high efficiency, they demonstrate to be important light sources in medicine, modern telecommunication [1], and industries [2, 3]. Progress has been made in developing a fiber– based source in which the mean power scales 
TI - Gain Saturation in Optical Fiber Laser Amplifiers
JF - Fiber Laser
DO - 10.5772/62136
DA - 2016-03-02
UR - https://www.deepdyve.com/lp/unpaywall/gain-saturation-in-optical-fiber-laser-amplifiers-JFweHMQhYk
DP - DeepDyve
ER -