Effects of the Radial Variation of the Electric Field on Some Instabilities in Optical Bistability and Lasers
The overwhelming majority of theories for laser and optical bistability (OB) have been worked out within the plane wave approximation. However, recently, several authors have focussed their attention on giving a description of these systems which fully includes the transverse variation of the electromagnetic field. The reason for doing that is twofold. First of all, in OB the field injected into the cavity has typically a Gaussian radial profile, and therefore it is impossible to obtain a reasonable quantitative agreement between theory and experiment without including this feature in the theory. Second, in the case of instabilities it has been shown that the radial variation of the field induces not only quantitative but even qualitative changes in the behaviour of the system. E.g., in the case of dispersive OB in a ring cavity with plane mirrors, the route to chaos changes from period doubling to quasiperiodic1. Other striking examples will be given in this paper.
KeywordsTransverse Mode Ring Cavity Radial Variation Incident Field Optical Bistability
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