We discuss various nonfeedback techniques, based on the knowledge of the ph
ase space, to steer the turn-on of class B lasers. The features and pitfall
s of single-step steering are analysed and the effectiveness of two-driving
-step ballistic steering is demonstrated on the basis of a realistic model
for an edge emitting semiconductor laser. Continuous steering is then intro
duced; simple criteria for its use are presented and applied numerically to
the turn-on of a CO2 laser. The potential applications resorting from this
nonlinear dynamical analysis are addressed and a brief review of the relev
ant technical literature is presented.