Measurement of gain and saturation parameters of a single-mode Yb:silica fiber amplifier

High energy, single-polarized, single-transverse-mode, nanosecond pulses generated by a multi-stage Yb-doped photonic crystal fiber amplifier

“…In general, the amplification relation in our experiment can be estimated by Frantz-Nodvick model [5,9,11] in which E sat is the saturation energy, E in , E out are the input pulse energy and the output pulse energy for the fiber amplifier, g 0 is the small-signal gain, L is the fiber length (3 m in our case ν is the signal photon energy, es σ , as σ are the emission and the absorption cross-section at the emission wavelength respectively, A is the doped area, and s Γ is the signal overlap with the active dopant (for single mode running at high pump rates: s Γ is approximated to be 0.75) [10].…”

Investigation of Amplification Parameters in Q-switched Fiber Oscillator-Amplifier Systems

“…On the other hand, in the case of DC fibers, the small-signal gain can be approximated by [2] , [13]: where, P core is defined as the power confined in the core of fiber.…”

“…In the design of fiber lasers and amplifiers, gain and saturation coefficients are considered as the main parameters [1], [2]. Among different gain mediums, the rare-earth ions of ytterbium (Yb) are very useful and considerable in high power fiber lasers especially in pulsed mode [3], [4].…”

Gain Saturation in Optical Fiber Laser Amplifiers

“…Tremendous efforts were made to develop the fiber amplifiers during the recent decade. Indeed, the amplifier is characterized by very important and unique gain and saturation parameters [55][56][57][58][59][60] that are often used to analyze and compare different gain mediums in certain applications.…”