Patent US2911981A successfully refreshed from Google Patents.
Patent US3715683A successfully refreshed from Google Patents.
US3715683A
Expired / Lapsed
US
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Coupled ion eye-safe laser
Assignee: Raytheon Co
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Filing: 1971-02-19
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Granted: 1973-02-06
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Expires: 1991-02-19
Abstract
Abstract A coupled ion laser operating at a frequency determined by the energy levels characteristic of the coupling of a lanthanide or actinide group ion with an iron group ion in an orthoaluminate material, such as yttrium orthoaluminate, is described in which low threshold high efficiency starting operation at predetermined frequencies in the region of eye safety is provided.
Inventors
- 👤 M Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:33
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/14; H01S3/16
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
64 words
An optically pumped solid state laser system comprising: an active laser medium having first and second ion coupled materials including trivalent vanadium ions; means for illuminating said solid state laser to produce population inversion in said medium; and said medium providing an energy level characteristic that is the composite of the individual energy level characteristics of said first and second trivalent ion coupled materials.
Claim 2
Dependent Claim
64 words
An optically pumped solid state laser system comprising: an active laser medium having first and second ion coupled materials including trivalent vanadium ions; means for illuminating said solid state laser to produce population inversion in said medium; and said medium providing an energy level characteristic that is the composite of the individual energy level characteristics of said first and second trivalent ion coupled materials.
Claim 3
Dependent Claim
22 words
A laser device in accordance with claim 1 wherein said first and second trivalent ions are trivalent vanadium and trivalent cerium respectively.
Claim 4
Dependent Claim
24 words
A laser device in accordance with claim 2 further characterized in that the laser emission is at a wavelength greater than approximately 1.4 microns.
Claim 5
Dependent Claim
84 words
In combination: a solid substantially single crystal laser medium; means for producing a population inversion of electrons in an energy state of a first element of said medium; the stimulated emission of coherent radiation from said energy state being such that an energy transition occurs between said energy state of said first element and an energy state of a second element; said energy state of said second element being a normally depopulated level; and at least one of said elements being trivalent vanadium ions.
Claim 6
Dependent Claim
84 words
In combination: a solid substantially single crystal laser medium; means for producing a population inversion of electrons in an energy state of a first element of said medium; the stimulated emission of coherent radiation from said energy state being such that an energy transition occurs between said energy state of said first element and an energy state of a second element; said energy state of said second element being a normally depopulated level; and at least one of said elements being trivalent vanadium ions.
Claim 7
Dependent Claim
33 words
A laser in accordance with claim 4 wherein said trivalent ions have an energy level characteristic that is the interaction composite of the individual energy level characteristics of said trivalent ion elements individually.
Claim 8
Dependent Claim
17 words
A laser in accordance with claim 5 wherein said trivalent ions are trivalent vanadium and trivalent cerium.
Claim 9
Dependent Claim
23 words
A laser in accordance with claim 6 further characterized in that the laser emission is at a wavelength greater than approximately 1.4 microns.
Claim 10
Dependent Claim
52 words
A laser device comprising: an active laser medium consisting essentially of a trivalent lanthanide group element and trivalent vanadium in an yttrium orthoaluminate host: a source of illumination incident upon said active medium for pumping said active medium; and means for stimulating the emission of coherent radiation from said pumped active medium.
Claim 11
Dependent Claim
52 words
A laser device comprising: an active laser medium consisting essentially of a trivalent lanthanide group element and trivalent vanadium in an yttrium orthoaluminate host: a source of illumination incident upon said active medium for pumping said active medium; and means for stimulating the emission of coherent radiation from said pumped active medium.
Claim 12
Dependent Claim
49 words
A laser device comprising: an active laser medium comprising a trivalent actinide element and trivalent vanadium in an yttrium orthoaluminate host; a source of illumination incident upon said active medium for pumping said active medium, and means for stimulating the emission of coherent radiation from said pumped active medium.
Claim 13
Dependent Claim
49 words
A laser device comprising: an active laser medium comprising a trivalent actinide element and trivalent vanadium in an yttrium orthoaluminate host; a source of illumination incident upon said active medium for pumping said active medium, and means for stimulating the emission of coherent radiation from said pumped active medium.
Claim 14
Dependent Claim
64 words
A solid state laser operative at a frequency in the low transmissivity region of the eye comprising: an active medium within the optical cavity consisting of trivalent vanadium and cerium ions in a yttrium orthoaluminate host; a source of illumination incident upon said active medium for pumping said active medium; and means for stimulating the emission of coherent radiation from said pumped active medium.
Claim 15
Dependent Claim
64 words
A solid state laser operative at a frequency in the low transmissivity region of the eye comprising: an active medium within the optical cavity consisting of trivalent vanadium and cerium ions in a yttrium orthoaluminate host; a source of illumination incident upon said active medium for pumping said active medium; and means for stimulating the emission of coherent radiation from said pumped active medium.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |