The laser is nowadays one of the best understood many-body problems. It is a system far from thermal equilibrium and it allows us to study cooperative effects in great detail. We take as an example the solid-state laser which consists of a set of laser-active atoms...
CITATION STYLE
Haken, H. (1983). Physical Systems (pp. 229–274). https://doi.org/10.1007/978-3-642-88338-5_8
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