Role of small anisotropies in selecting the polarization of CO2 lasers
Anno: 1998
Autori: Labate A., Meucci R., Ciofini M., Abraham NB., Taggiasco C.
Affiliazione autori: Istituto Nazionale di Ottica, Largo E. Fermi 6, 50125 Firenze, Italy;
Bryn Mawr College, Dept. of Phys.,Bryn Mawr, USA;
Institut Non Linéaire de Nice, UMR 129 CNRS-UNSA, 1361 Route des Lucioles, 06560 Valbonne, France
Abstract: We investigate the polarization properties of the lowest-order transverse patterns in two different CO2 Fabry-Perot lasers. Emission on the fundamental mode TEM0,0 is always linearly polarized in a fixed direction. The annular intensity pattern TEM0,1* may have one of two different underlying polarization states: either linear polarization that is the same as for the fundamental mode or the superposition of two Gauss-Hermite modes with different optical frequencies and with linear and nearly orthogonal polarizations. Transitions among these three patterns are obtained by varying the cavity detuning. The two underlying polarization states of the annular intensity pattern can be explained using a simple model that includes anisotropies in both the cavity losses and the detuning for the Gauss-Hermite modes. We also provide an explanation of the relationship between the possible polarization states and the corresponding spatial patterns that form an annular intensity pattern.
Giornale/Rivista: QUANTUM AND SEMICLASSICAL OPTICS
Volume: 10 (1) Da Pagina: 115 A: 124
Parole chiavi: Anisotropy; Laser modes; Laser tuning; Light emission; Light polarization; Mathematical models, Annular intensity patterns; Carbon dioxide Fabry Perot lasers; Gauss-Hermite modes, Carbon dioxide lasersDOI: 10.1088/1355-5111/10/1/016Citazioni: 4dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-04-28Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui