Delayed bifurcation at the threshold of a swept gain CO2 laser

Year: 1989

Authors: Arecchi F.T., Gadomski, W., Meucci R., Roversi J.A.

Autors Affiliation: Istituto Nazionale di Ottica, Largo E. Fermi 6, 50125 Firenze, Italy
Department of Physics, University of Firenze, 50125 Firenze, Italy;
Warsaw University, Warsaw, Poland;
Universidade Estadual de Campinas, Campinas, S.P., Brasil

Abstract: A single mode CO2 laser near threshold behaves differently depending on whether the threshold is reached by varying the pump or the cavity losses. Only in the first case we observe a delayed bifurcation. Our experimental results are explained by a four level molecular model which takes into account the coupling between the two resonant levels and the rotational manifold.

Journal/Review: OPTICS COMMUNICATIONS

Volume: 70 (2)      Pages from: 155  to: 160

More Information: The authors thank N.B. Abraham for helpful discussions and M. Ciofini and L. Pezzati for help in measurements. One of us (J.A.R.) has a fellowship of CNPq (National Research Council of Brazil). This work was partly supported by the European Economic Community. W.G. was supported in part by the Polish Ministery of Science and Higher Education under project CPBP 01.06.
KeyWords: Mathematical Techniques–Numerical Analysis; Modulation; Resonators, Cavity, Delayed Bifurcation; Rotational States, Lasers, Carbon Dioxide
DOI: 10.1016/0030-4018(89)90288-5

Citations: 31
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