2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/127784We report an experimental observation of polaritonic optical bistability of the laser emission in a planar semiconductor microcavity with a $100Å$ GaAs single quantum well in the strong-coupling regime. The bistability curves show crossings that indicate a competition between a Kerr-like effect induced by the polariton population and thermal effects. Associated with the bistability, laser-like emission occurs at the bare cavity mode.Article written in 4 pages. It haves 12 figures. This article were presented in the PRB on 01/17/2007 and is in valuation processOpticsGeneral Physicstext