Microchip lasers based on Nd:Ca/sub 4/GdO(BO/sub 3/)/sub 3/

Summary form only given. The Nd/sup 3+/:Ca/sub 4/GdO(BO/sub 3/)/sub 3/ crystal (Nd:GdCOB) has already been demonstrated to be efficient for self-frequency doubling in the green when a diode-pumped Nd:GdCOB crystal is placed in a concave-concave cavity. We have also reported on the performances of diode-pumped Nd:GdCOB crystals put in a short plano-plano cavity consisting of a Nd:GdCOB crystal with antireflection coating and two plane mirrors put very close to the crystal.