It is shown that a highly randomlike behavior of light polarization states in the output of a free-running laser diode, covering the whole Poincar ́e sphere, arises as a result from a fully deterministic nonlinear process, which is characterized by a hyperchaotic dynamics of. It is shown that a highly randomlike behavior of light polarization states in the output of a free-running laser diode, covering the whole Poincar ́e sphere, arises as a result from a fully deterministic nonlinear process, which is characterized by a hyperchaotic dynamics of. This work presents evidence that by tuning the excitation laser energy to specific resonance values the excitation efficiency can be enhanced, resulting in relative increase of photoluminescence intensity by up to an order of magnitude. The resonances can be selectively addressed with linearly. The polarization multiplexing (PM) of high-power laser beams is of utmost importance because it allows both their optical power and brightness addition [1, 2]. Highly polarized input beams are, however, required by PM in order to avoid significant optical losses. In the simplest case, a light beam is linearly polarized, which means that the electric field oscillates in a certain linear direction perpendicular to the beam axis, and the magnetic field. In particular, we will discuss the realization of an electrically pumped polariton laser, which manifests a major step towards the exploitation of polaritonic devices in the real world. INTRODUCTION Quantum well (QW) microcavity exciton–polaritons are quasiparticles in the strong light matter.