Pattern selection and stabilization in an annular CO2 laser
Dept. of Physics and Applied
Mathematics, Universidad de Navarra, 31080 Pamplona, Spain
2 Istituto Nazionale di Ottica, Largo E. Fermi 6, 50125 Firenze, Italy
Published online: 15 July 2000
The formation and stabilization of spatio-temporal patterns in an annular CO2 laser is studied. We give experimental and numerical evidence of the role of a small spatial perturbation (consisting of a thin metallic wire inserted in the optical cavity) in the selection and stabilization of patterns.
PACS: 42.55.-f – Lasers / 42.65.Sf – Dynamics of nonlinear optical systems; optical instabilities, optical chaos and complexity, and optical spatio-temporal dynamics / 42.65.-k – Nonlinear optics
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2000