US3772609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser cavity configuration yielding dual output beam
Assignee: United States Department of the Army
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Filing: 1972-06-30
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Granted: 1973-11-13
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Expires: 1992-06-30
Abstract
Abstract A laser cavity configuration which enables a single laser medium (gas, liquid or solid) to give an output at least one wavelength from one end of the laser and another output at different wavelengths from the other end of the laser. Disclosed are several well known laser media which are capable of simultaneous laser oscillation at two or more wavelengths. Mirrors which are highly reflective at one of such wavelengths and highly transmissive at another of such wavelengths can be prudently selected to resonate the emission from an active medium. If each of the two mirrors thus required are optimized for reflectivity at one of the wavelengths and transmissivity at the other, the desired effect will result.
Inventors
- 👤 C Willett
- 👤 J Kruger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:32
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/05; H01S3/08; H01S3/08086; H01S3/0809
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
136 words
A cavity configuration for stimulating the emission of radiation and for allowing the simultanEous oscillation and subsequent emission of first and second laser beams having at least first and second wavelengths, respectively, comprising an active laser medium and first and second means for reflecting said stimulated radiation back within said medium, said reflecting means located one at each end of said active medium which together therewith define a resonant cavity, said first reflecting means having a higher reflectivity at said first wavelength than said second reflecting means, and said second reflecting means having a higher reflectivity at said second wavelength than said first reflecting means, whereby said first laser beam will be emitted from said cavity through said second reflecting means and said second beam will be emitted from said cavity through said first reflecting means.
Claim 2
Dependent Claim
136 words
A cavity configuration for stimulating the emission of radiation and for allowing the simultanEous oscillation and subsequent emission of first and second laser beams having at least first and second wavelengths, respectively, comprising an active laser medium and first and second means for reflecting said stimulated radiation back within said medium, said reflecting means located one at each end of said active medium which together therewith define a resonant cavity, said first reflecting means having a higher reflectivity at said first wavelength than said second reflecting means, and said second reflecting means having a higher reflectivity at said second wavelength than said first reflecting means, whereby said first laser beam will be emitted from said cavity through said second reflecting means and said second beam will be emitted from said cavity through said first reflecting means.
Claim 3
Dependent Claim
29 words
The invention according to claim 1 wherein said active laser medium is selected from the group consisting of neon, nitrogen, hydrogen, argon, helium, lead, copper, mercury, xenon and cadmium.
Claim 4
Dependent Claim
16 words
The invention according to claim 1 wherein said active laser medium comprises a superradiant laser material.
References Cited (Backward Citations)
US3492600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-12 | 1977-05-14 | 1977-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-12 | 1981-05-14 | 1981-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-12 | 1985-05-14 | 1985-11-13 | $7700.00 | Window Closed / Lapsed |