Self-Induced Faraday Instability Laser

We predict the onset of self-induced parametric or Faraday instabilities in a laser, spontaneously caused
by the presence of pump depletion, which leads to a periodic gain landscape for light propagating in the
cavity. As a result of the instability, continuous wave oscillation becomes unstable even in the normal
dispersion regime of the cavity, and a periodic train of pulses with ultrahigh repetition rate is generated.
Application to the case of Raman fiber lasers is described, in good quantitative agreement between our
conceptual analysis and numerical modeling.