Heat capacity laser and associated lasing medium
AssigneeInstitut Franco-Allemand de Recherches de Saint-Louis
InventorMarc Eichhorn
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Abstract
A heat capacity laser having a solid lasing medium, at least one pumping source that is able to emit a pumping radiation, and an optical cavity that can be characterized by having: at least one device able to homogenize the pumping radiation, a doped lasing medium having a body with a first and a second end and being stretched in the length by more than 6 cm and whose height in cross section is less than its stretching in the length of the lasing medium. The doping concentration in the lasing medium may vary axially. Also either the cavity can have beam forming optics and the doping concentration of the lasing medium is radially uniform, or the cavity can have no beam forming optics and the lasing medium has a doping concentration that may vary radially.
Claims23
A heat capacity laser having a solid lasing medium, at least one pumping source able to emit a pumping radiation, and an optical cavity, comprising:
- at least one device able to homogenize the pumping radiation;
- and
- a doped lasing medium having a body with a first and a second end and being extended in a length by more than 6 cm and whose height in cross section is less than its extension in the length;
- wherein a doping concentration in the lasing medium varies axially, this concentration being less at the first end and increasing up to a center of the lasing medium.
A doped lasing medium comprising:
- a body with two ends, a first end and a second end,
- wherein the body is extended in a length by more than 6 cm and in that its height in cross section is less than its extension in the length, and in that a doping concentration in the lasing medium varies axially, the concentration being less at at least one of the ends and increasing toward a center of the lasing medium.
A heat capacity laser having a solid lasing medium, at least one pumping source able to emit a pumping radiation, and an optical cavity, comprising:
- at least one device able to homogenize the pumping radiation;
- and
- a doped lasing medium having a body with a first and a second end and being extended in a length by more than 6 cm and whose height in cross section is less than its extension in the length;
- wherein either the optical cavity has beam forming optics able to ensure homogenization of the laser beam in a lasing phase and a doping concentration of the lasing medium is radially uniform, or the optical cavity has no beam forming optics able to ensure homogenization of the laser beam in the lasing phase and the doping concentration of the lasing medium varies radially,
- a radial distribution of the doping of the lasing medium being defined such that the doping increases radially from the edge to the center of the body.
Dependencies are inferred from the claim text.