MODE COMPETITION IN A TWO-MODE LASER SYSTEM SUBJECT TO BOTH PUMP NOISE AND QUANTUM NOISE

Abstract

The laser intensity Langevin equations for a two-mode ring laser subject to both pump noise and quantum noise have been obtained by a phase-locking method. By means of stochastic simulation, the mode competition between two modes for different combinations of the strength of the pump noise, the coupling constant and the difference of pump parameters have been investigated. The results show the following. (i) The pump noise dramatically affects the mode competition. (ii) The mode competition is quite sensitive to changing of the coupling constant near the line center. (iii) The mode competition gets stronger and stronger with increasing absolute value of the difference of pump parameters.