Coherent driving of Tm3+:YAG ions using a complex hyperbolic secant optical field F. de Seze, F. Dahes, V. Crozatier, I. Lorgeré, F. Bretenaker and J.-L. Le Gouët Eur. Phys. J. D, 33 3 (2005) 343-355 Published online: 15 June 2005 DOI: 10.1140/epjd/e2005-00086-8