US4035742A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for optical pumping solid state lasers
Assignee: Siemens AG
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Filing: 1976-03-04
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Granted: 1977-07-12
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Expires: 1996-03-04
Abstract
Abstract A device for optically pumping a solid state laser consisting of a rod of a laser material, and at least one light pumping source having a point form or shape characterized by a waveguide arranged between each pumping light source and the laser rod for coupling the pumping light into the rod. Preferably, the waveguides are either glass rods or a prism and the optical axis of the waveguide extends at an angle delta with a normal to a flat surface of the rod of laser material which angle delta has a relation of 2 arc sin (1/n1) </= delta < pi /2 wherein n1 is the index of refraction of the light waveguide.
Inventors
- 👤 Gerhard Schiffner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:34
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/05; H01S3/06; H01S3/0602; H01S3/0606; H01S3/09; H01S3/091; H01S3/0915; H01S3/0933; H01S3/094; H01S3/0941; H01S3/094049; H01S3/094057
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
95 words
In a pumping arrangement for optically pumping a solid state laser, said arrangement comprising a laser rod, and at least one pumping light source having nearly point form with the improvement comprising a light waveguide arranged between each pumping light source and the laser rod, each light waveguide having an optical axis extending at an angle δ to a normal of the surface of the laser rod with the angle δ having a relationship of 2 arc sin (1/n.sub.1) ≦ δ < π/2, wherein n 1 is the index of refraction of the light waveguide.
Claim 2
Dependent Claim
95 words
In a pumping arrangement for optically pumping a solid state laser, said arrangement comprising a laser rod, and at least one pumping light source having nearly point form with the improvement comprising a light waveguide arranged between each pumping light source and the laser rod, each light waveguide having an optical axis extending at an angle δ to a normal of the surface of the laser rod with the angle δ having a relationship of 2 arc sin (1/n.sub.1) ≦ δ < π/2, wherein n 1 is the index of refraction of the light waveguide.
Claim 3
Dependent Claim
16 words
In a pumping arrangement according to claim 1, wherein each light waveguide is a glass rod.
Claim 4
Dependent Claim
15 words
In a pumping arrangement according to claim 1, wherein each light waveguide is a prism.
Claim 5
Dependent Claim
34 words
In a pumping arrangement according to claim 1, wherein the laser rod has a rectangular cross section and wherein each light waveguide is coupled to a portion of the surface of the laser rod.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-07-11 | 1981-01-10 | 1981-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-11 | 1985-01-10 | 1985-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-11 | 1989-01-10 | 1989-07-12 | $7700.00 | Window Closed / Lapsed |