Figure 1

Laser measurements in the pulsed regime with different stability regions marked with different colors. (a) LIV curve. (b) Far-field measurements. (c) Spectra measurements. (d) close-up view of the spectra at two values of current.Reuse & Permissions

Figure 2

Time-dependent dynamics of modal amplitudes of the electric field (in CGS units) (a) and total phases (b) for five random initial conditions. The gain is 3.5 times the threshold gain for the ${\mathrm{TM}}_{01}$ mode, which has the lowest threshold $g_{\mathrm{th}}\sim 1.37\times {10}^{11}{\mathrm{s}}^{-1}$ (about $15{\mathrm{cm}}^{-1}$).Reuse & Permissions

Figure 3

Modal field amplitudes (a) and frequencies (b) of stable frequency- and phase-locked steady-state solutions as a function of small-signal gain $g_j$, normalized to $g_{\mathrm{th}}$.Reuse & Permissions

Figure 4

(a) A sketch of spectral positions of cold cavity modes in the case of three lateral modes. (b) evolution of total phases of 15 modes (3 lateral modes times 5 longitudinal modes) for the gain 3.5 times laser threshold, which shows that three combs belonging to three lateral modes merge into a single comb.Reuse & Permissions

Figure 5

(a) Absolute values of the amplitudes and (b) frequencies of the three modes forming a single triplet as a function of the linear gain normalized to the threshold value, calculated for a large set of random initial conditions. (c) Same as in (b) but for three closely spaced triplets, or three longitudinal modes per each lateral mode. (d) normalized far-field distribution for a single triplet at different gains (curves are shifted for clarity).Reuse & Permissions