General phase-diagram of multimodal ordered and disordered lasers in   closed and open cavities
  We present a unified approach to the theory of multimodal laser cavities including a variable amount of structural disorder. A general mean-field theory is studied for waves in media with variable non-linearity and randomness. Phase diagrams are reported in terms of optical power, degree of disorder and degree of non-linearity, tuning between closed and open cavity scenario's. In the thermodynamic limit of infinitely many modes the theory predicts four distinct regimes: a continuous wave behavior for low power, a standard mode-locking laser regime for high power and weak disorder, a random laser for high pumped power and large disorder and an intermediate regime of phase locking occurring in presence of disorder below the lasing threshold. 
Fabrizio Antenucci, Claudio Conti, Andrea Crisanti, Luca Leuzzi
physics.optics cond-mat.dis-nn cond-mat.stat-mech