6533b857fe1ef96bd12b38ba
RESEARCH PRODUCT
Polarization phenomena in a laser coherently pumped by a linearly polarized field
Ramon VilasecaRamón CorbalánA. Kul’minskiiG. J. De ValcárcelEugenio RoldánCarles Serratsubject
PhysicsPolarization rotatorLinear polarizationbusiness.industryGeneral EngineeringPhysics::OpticsElliptical polarizationPolarization (waves)Atomic and Molecular Physics and OpticsOpticsRadial polarizationAtomic physicsbusinessAnisotropyMagnetic dipoleCircular polarizationdescription
The field intensity and polarization behaviour of an optically pumped laser is investigated in different operating conditions. For a linearly polarized pump field, a strong gain anisotropy is induced which favours generation of light with a polarization parallel to that of the pump field. Thus gain anisotropy can be counterbalanced by cavity-loss anisotropy only at low pumping field intensities, and the interplay between both types of anisotropy leads to polarization switching phenomena. In contrast to the case of the incoherently pumped laser, the decay rate for the magnetic dipole induced on the J = 1 level plays a minor role in determining the polarization dynamics. The influence of a longitudinal magnetic field or of modulation of the pump-field polarization orientation leads to new features and complex dynamic behaviour which includes full polarization (or vector) chaos.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1998-02-01 | Quantum and Semiclassical Optics: Journal of the European Optical Society Part B |