Back to results
US 5,206,874 AGranted
Solid-state laser
AssigneeDeutsche Forschungsanstalt
InventorHans Opower
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeDeutsche Forschungsanstalt
InventorHans Opower
Estimating the term…
In order to improve a solid-state laser comprising a resonator, at least one solid-state rod arranged in the resonator and a pumping power source for exciting the solid-state rod such that the dissipation heat can be controlled better and excitation for high powers is possible in a simple way, it is proposed that the resonator be a coupled resonator, that the resonator have two elongated excitation sections lying in one plane with one of the solid-state rods being arranged in their respective beam, that the resonator have a coupling section which the beams of the excitation sections enter as outer beams extending parallel to one another but in spaced relation to one another and which couples the excitation sections with one another by displacement of the outer beams in the plane defined by these to a coupling axis lying parallel to and between the outer beams and beyond this coupling axis, and that irradiated by the pumping power source on another side surface.
Solid-state laser comprising a laser-active unit with a laser amplification volume (46, 48, 216) extending in a first direction in a solid, a pump means (174, 192, 218) associated with said laser amplification volume (46, 48, 216) for exciting said laser amplification volume and a resonator (152, 262, 300) with an excitation section (14, 16, 280) arranged between its resonator mirrors and a beam (20, 22, 294) extending in a direction of propagation (21, 23 296) in said excitation section and thereby penetrating said laser amplification volume (46, 48, 216) in said first direction (50, 52, 230), characterized in that at least two excitation sections (14, 16, 218) are provided, each having one laser amplification volume (46, 48, 216), in that said beams (20, 22, 294) of said excitation sections (14, 16, 280) extend in spaced relation to one another, in that said resonator (152, 262) has a coupling section (28, 282, 284) containing a coherent joint beam (121, 286) of said resonator (152, 262), the cross-section thereof being comprised of several partial beams (24, 26, 292), and in that an optical element (156, 288, 290) is arranged between said coupling section (28, 282, 284) and each excitation section (14, 16, 280) for imaging one of said partial beams (24, 26, 292) of said joint beam (121, 286) into one of said beams (20, 22, 294) extending in spaced relation to one another in said excitation sections (14, 16, 280).
Solid-state laser as defined in clam 32, characterized in that a gas discharge is generated in said gas-discharge lamp (174) by a field extending azimuthally in relation to the axis thereof.
Solid-state laser comprising a resonator, at least one laser amplification volume arranged in said resonator and a pumping means for exciting said laser amplification volume, characterized in that said resonator (12, 112, 152) is a coupled resonator, in that said resonator (12, 112, 152) has two elongated excitation sections (14, 16), one of said laser amplification volumes (46, 48, 216) being arranged in their beam (20, 22), respectively, in that said resonator (12, 112, 152) has a coupling section (28) which the beams of said excitation sections (14, 16) enter as outer beams (24, 26) extending in spaced relation to one another and which couples said excitation sections (14, 16) with one another by displacing said outer beams (24, 26) in the plane defined by these to a coupling axis (30) lying between these and beyond this coupling axis (30), and in that said laser amplification volumes (46, 48, 216) are cooled on a side (60, 62, 66) extending along said beam and are excitable by said pumping means (70, 72, 174, 192, 218) from a side (64, 238) extending along said beam.
Dependencies are inferred from the claim text.