Neodymium-doped gehlenite crystal and laser using said crystal
OwnerAnne-Marie Lejus, Daniel Vivien +3inventors
InventorsAnne-Marie Lejus, Daniel Vivien, Robert Collongues, Driss Saber, Jean-Marie Benitez
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Abstract
Neodymium-doped gehlenite crystal and laser using said crystal. The crystal according to the invention has the formula Ca.sub.2-x Nd.sub.x Al.sub.2+x Si.sub.1-x O.sub.7 with 0<.times..ltoreq.1. This crystal can be used as a laser emitter (4) optically pumped by a laser diode (6), whose temperature is not controlled by a Peltier element component.
Claims13
A neodymium-doped gehlenite crystal of formula Ca.sub.2-x Nd.sub.x Al.sub.2-x Si.sub.1-x O.sub.7 with 0<.times..ltoreq.3, whereby said crystal has a chemical inertia and hardness, so that it has an improved mechanical strength, and whereby said crystal has an improved thermal conductivity.
Laser essentially having a laser cavity (2) containing as the light emitter a monocrystal (4), means (10, 12) for amplifying the light from the monocrystal, means (10) for extracting the light from the laser cavity and pumping means (6, 7), characterized in that the monocrystal is a neodymium-doped gehlenite of formula Ca.sub.2-x Nd.sub.x Al.sub.2+x Si.sub.1-x O.sub.7 with 0<.times..ltoreq.1.
Dependencies are inferred from the claim text.