Space-propagation model of Tm-doped fiber laser

Abstract

In this paper, we propose the space-propagation model for the Tm-doped fiber laser. This model builds the space-propagation equations for the population densities at different energy levels as well as the pump and laser powers. Compared to the conventional models, this model has significant advantage in reducing the computing time significantly when the steady-state population density rate equations cannot be solved analytically. On the basis of the model, the power characteristic and optimization for the Tm-doped fiber laser are investigated. Excellent agreements are achieved between the numerical simulation and experimental results.

Temporal characteristics of gain-switched thulium-doped fiber laser near threshold

“…The effects of pump pulse energy on the output temporal characteristics of the gain-switched TDFL are numerically simulated by solving Eqs. (1) and (2) with the Runge-Kutta method [10,18,19]. The values of these parameters used in the numerical simulation are inconsistent with the experimental setup and are listed in Table 1.…”

High-power all-fiberized thulium-doped fiber MOPA

“…The Tm-doped fiber MOPA could be modeled exactly with our recently proposed space-propagation model [16]. The description of the model is given in [16], and as it is relatively complex it would not be repeated here.…”

“…The Tm-doped fiber MOPA could be modeled exactly with our recently proposed space-propagation model [16]. The description of the model is given in [16], and as it is relatively complex it would not be repeated here. The output power of the fiber MOPA could be calculated and predicted in figure 4(a) (denoted by the line), indicating that the experimental results agree well with the theoretical values.…”