Cavity solitons in two-level lasers with dense amplifying medium |
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Authors: | Ahufinger V García-Ojalvo J Mompart J Torrent M C Corbalán R Vilaseca R |
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Institution: | Departament de Física, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain. |
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Abstract: | Local-field effects are known to induce bistability in dense optical media. We examine theoretically whether this property is preserved in broad-area cavities, and show that bistability between the homogeneous lasing and nonlasing states of the system persists provided a Fourier filtering technique is used to prevent off-axis emission. The resulting bistability gives rise to spatial light localization in the form of cavity solitons, which exhibit a particularly large degree of plasticity as a function of the characteristics of the addressing beam. This is the simplest laser able to sustain cavity solitons. |
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