Abstract

We study the Tang, Statz, and deMars rate equations (TSME) for a two-mode laser in a Fabry–Perot cavity¹ including loss modulation, which is assumed to be sinusoidal with scaled amplitude δ and frequency Ω. Let w (w_c), k, and γ be the scaled pump rate (threshold), constant loss and gain² of the laser. For w > w_c the two steady-state modes lase simultaneously. In the absence of modulation these modes are stable, and for k ≫ 1 and γ = 1 − o(ϵ) they exhibit under any small perturbation antiphased (in-phased) relaxation oscillation at frequency Ω_L (Ω_R > Ω_L). To observe steady-state antiphase we choose for our numerical simulations w = 2.5, k = 5.10⁴, and γ = 0.95, which gives w_c = 1.1637. This implies Ω_L = 20.17 and Ω_R = 40.25.

© 1994 IEEE