Order parameters for class-B lasers with a long time delayed feedback

A local dynamics for class-B laser systems with optoelectronic feedback is considered in the case of a very long time delay. We determine the conditio ns for the bifurcation of infinite dimension. It is shown that the (ordinar y) delay system can be described by a systematically derived complex Ginzbu rg-Landau equation without delay terms. The complicated quasi-periodic dyna mics near equilibrium can be demonstrated analytically on the basis of spac e-time representation. (C) 2000 Elsevier Science B.V. All rights reserved.