Using the classical treatment of the stimulated Raman-scattering process, we use a theoretical model to simulate the operation of an nth-order cascaded Raman fiber laser. We introduce the partial differential equations employed to describe the propagation and time dependence of the forward and reverse-propagating fields of an nth-order cascaded Raman fiber laser. Under steady-state conditions, these equations form the well-known system of first-order, nonlinear boundary-value ordinary differential equations, with separated boundary conditions. We solve this system of equations numerically with the use of mono-implicit Runge–Kutta methods within a defect-control framework. We consider cascaded Raman fiber lasers of orders 2 through 5 and examine the parameters that influence the operation of these devices. We also provide preliminary results on the investigation of a time-dependent model in which the pump power is assumed to vary periodically with time. The associated system of first-order, hyperbolic, partial differential equations is treated by employing a transverse method-of-lines algorithm; the time derivatives are discretized with a finite-difference scheme, yielding a large system of boundary-value ordinary differential equations. We establish that for sinusoidal modulation of the pump the Stokes cavity modes exhibit antiphase dynamics typical of a system of locally coupled nonlinear oscillators.
© 2001 Optical Society of AmericaFull Article | PDF Article
C. Martijn de Sterke, Kenneth R. Jackson, and B. D. Robert
J. Opt. Soc. Am. B 8(2) 403-412 (1991)
Germán J. de Valcárcel, Eugenio Roldán, and Franco Prati
J. Opt. Soc. Am. B 20(5) 825-830 (2003)
John AuYeung and Amnon Yariv
J. Opt. Soc. Am. 69(6) 803-807 (1979)