2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/80846We theoretically study analytic-phase synchronization in strongly-competing oscillator systems. Using the example of composite-cavity modes coupled via a class-B laser active medium, we discover that inherent chaotic phase synchronization can arise concurrently at two different chaotic attractors, leading to bistable phase-synchronized solutions. In our example, the underlying mechanism for bistability and inherent phase synchronization is population pulsation within the active medium.6 pages, revised mechanism for the loss of chaotic phase synchronization, changed Fig.2, three new figures: Figs.3-5Chaotic Dynamicstext