NONLINEAR EFFECTS IN A 2-MODE LASER WITH MULTIPLICATIVE NOISE-INDUCEDBY GAIN FLUCTUATIONS

A two-mode ring laser gain-noise model taking account of full saturati on effects with multiplicative noise induced by gain fluctuations is i nvestigated. A comparison with the currently used models, where multip licative noise arises from loss fluctuations, shows that the laser int ensity statistical properties are not only related to saturation effec ts but also subject to the way in which multiplicative noise is introd uced. The nonlinear multiplicative noise coefficient occurring in this novel model due to gain fluctuations weakens the anomalous characteri stics brought about in the laser intensity statistical properties by i ntroducing multiplicative noise, (C) 1998 Elsevier Science B.V.