Patent US3701048A successfully refreshed from Google Patents.
← Back to Patent Explorer
US3701048A Expired / Lapsed US ⏱️ 0.0 years remaining

Multi-rod single pump source laser

Assignee: United States Department of the Army
•
Filing: 1967-09-15
•
Granted: 1972-10-24
•
Expires: 1987-09-15
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A device for achieving laser output at a high repetition frequency wherein a plurality of laser rods are pumped by a singular source and the output beams of the laser rods are directed in substantially the same path.

Inventors

  • 👤 Walter B Jennings Jr

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 18:47
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/10; H01S3/11; H01S3/1123; H01S3/121; H01S3/125; H01S3/05; H01S3/06; H01S3/07; H01S3/08; H01S3/08059; H01S3/081; H01S3/0813

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 270 words
A multi-rod single pump source laser comprising: an optical pumping means; a plurality of rods comprising a quality of lasing material, said rods arranged in a circular configuration about said pumping means wherein the longitudinal axes of said rods and said pumping means are parallel; a Fabry-Perot plate reflector for forming in conjunction with each rod a portion of a FabryPerot cavity; reflecting means used transiently by each of said rods to form another portion of said cavity such that said rods undergo lasing action and produce a beam when transiently pumped by said pumping means; said optical pumping means comprising a lamp, a first U-shaped reflector rotatable about said lamp, a second U-shaped reflector disposed about each of said rods, means for transiently energizing said lamp to produce optical energy, and means for rotating said first reflector whereby said lamp is energized as the open end of said first U-shaped reflector aligns with the open ends of said second U-shaped reflectors; said reflecting means comprising a first right prism disposed at a first end of each of said rods, and a totally internal reflecting (TIR) prism rotatably disposed about an axis coincident with the axis of said pumping means such that the hypotenuse of said TIR prism is parallel to said axis, wherein said TIR prism optically aligns, as it rotates, with each of said rods by way of said first right prisms such that any light energy emerging from said rod is reflected by said first right prism into said TIR prism and from said TIR prism back to said rod by way of said first right prism.
Claim 2
Dependent Claim 270 words
A multi-rod single pump source laser comprising: an optical pumping means; a plurality of rods comprising a quality of lasing material, said rods arranged in a circular configuration about said pumping means wherein the longitudinal axes of said rods and said pumping means are parallel; a Fabry-Perot plate reflector for forming in conjunction with each rod a portion of a FabryPerot cavity; reflecting means used transiently by each of said rods to form another portion of said cavity such that said rods undergo lasing action and produce a beam when transiently pumped by said pumping means; said optical pumping means comprising a lamp, a first U-shaped reflector rotatable about said lamp, a second U-shaped reflector disposed about each of said rods, means for transiently energizing said lamp to produce optical energy, and means for rotating said first reflector whereby said lamp is energized as the open end of said first U-shaped reflector aligns with the open ends of said second U-shaped reflectors; said reflecting means comprising a first right prism disposed at a first end of each of said rods, and a totally internal reflecting (TIR) prism rotatably disposed about an axis coincident with the axis of said pumping means such that the hypotenuse of said TIR prism is parallel to said axis, wherein said TIR prism optically aligns, as it rotates, with each of said rods by way of said first right prisms such that any light energy emerging from said rod is reflected by said first right prism into said TIR prism and from said TIR prism back to said rod by way of said first right prism.
Claim 3
Dependent Claim 96 words
A multi-rod single pump source laser as set forth in claim 1 to further comprise a second right prism at each second end of said rods and a regular pyramid having a plurality of sides equal in number to said plurality of rods, said Fabry-Perot plate being disposed between said right prisms and said second end of said rods, said second right prisms and said sides of said pyramid being optically aligned to bring said output beams closer together and to direct said output beams substantially along an axis parallel to said axes of said rods.

References Cited (Backward Citations)

US3311844A Cited
US3408937A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-10-24 1976-04-24 1976-10-24 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-10-24 1980-04-24 1980-10-24 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-10-24 1984-04-24 1984-10-24 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag