Abstract
It is now well-established that in certain conditions the time dependence of the output intensity of some laser systems can be described as deterministic chaos. This result has been established by making use of what are now standard techniques for the analysis of deterministic chaotic signals, i.e., the calculation of dimensions, entropies, Lyapunov exponents, and the analysis of Poincaré sections of the system's phase space trajectories. Similar analyses have shown characteristic signatures of the stochastic origins of random signals (noise). Some preliminary results indicate that the time dependence of amplified spontaneous emission from, e.g., a long discharge tube, is likely not to be chaotic in the sense that if it can be characterized by a finite dimension, this dimension is much too large to be determined reliably by present techniques.
© 1986 Optical Society of America
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