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US 7,003,011 B2Granted
Thin disk laser with large numerical aperture pumping
AssigneeSpectra-Physics, Inc.
InventorsJames D. Kafka, Dirk Sutter
Life of this patent
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Abstract
An optical system has a high power diode pump source and a thin disk gain media. An optical coupler is positioned between the diode pump source and the thin disk gain media. The optical coupler produces a beam with a large numerical aperture incident on the thin disk gain media.
Claims53
An optical system, comprising:
- a high power diode pump source producing a pump beam;
- an end-pumped thin disk gain media;
- and
- an optical coupler positioned between the diode pump source and the thin disk gain media, the optical coupler producing a modified pump beam with a large numerical aperture incident on the incident surface of the thin disk gain media, wherein the numerical aperture of the modified pump beam incident on the incident surface of the thin disk gain media is greater than 0.35.
1 more element
An optical system, comprising:
- at least first and second high power diode pump sources producing first and second pump beams;
- an end-pumped thin disk gain media;
- at least first and second optical couplers positioned between each of the diode pump sources and the thin disk gain media, the optical couplers producing modified pump beams with large numerical apertures;
- and
- wherein the first and second modified pump beams are incident from substantially different directions at substantially the same location on the incident surface of the thin disk gain media, wherein the numerical aperture of the modified pump beam incident on the incident surface of the thin disk gain media is greater than 0.35.
2 more elements
A method of pumping a thin disk gain media, comprising:
- providing a high power diode pump source producing a pump beam;
- passing the diode pump beam through an optical coupler positioned between the diode pump source and end pumping a thin disk gain media;
- forming a modified pump beam with a large numerical aperture from the optical coupler, wherein the numerical aperture of the modified pump beam incident on the incident surface of the thin disk gain media is greater than 0.35;
- and
- positioning the modified pump beam at an incidence surface of the thin disk gain media.
2 more elements
A method of materials processing, comprising:
- providing a high power diode pump sources producing a pump beam;
- providing thin disk gain media;
- passing the diode pump beam through an optical coupler positioned between the diode pump source and end pumping thin a disk gain media;
- forming a modified pump beam with a large numerical aperture from the optical coupler, wherein the numerical aperture of the modified pump beam incident on the incident surface of the thin disk gain media is greater than 0.35;
- positioning the modified pump beam at the incidence surface of the thin disk gain media;
- amplifying the input beam to produce an output beam;
- and
- directing the output beam to an article to be processed.
5 more elements
A method of pumping a thin disk gain media, comprising:
- providing at least first and second high power diode pump sources producing first and second pump beams;
- passing at least the first and second pump beams through at least a first and second optical coupler positioned between each diode pump source and end pumping a thin disk gain media;
- forming at least a first and second modified pump beams with large numerical apertures from the optical couplers, wherein the numerical aperture of the modified pump beams incident on the incident surface of the thin disk gain media is greater than 0.35;
- and
- positioning the first and second modified pump beams from substantially different directions at substantially the same location on the incident surface of the thin disk gain media.
2 more elements
Dependencies are inferred from the claim text.