Patent US3586998A successfully refreshed from Google Patents.
US3586998A
Expired / Lapsed
US
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Pulsed laser output control
Assignee: PATLEX Corp
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Filing: 1969-07-28
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Granted: 1971-06-22
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Expires: 1989-07-28
Abstract
Abstract ''''Giant pulse'''' laser apparatus is described in which an absorber material is disposed in the resonant cavity in a concentrated portion of the beam of light emitted by the pumped working medium (being preferably the same substance as the absorber material) so as to raise the energy threshold level at which oscillation occurs. Upon absorbing a sufficient level of emitted radiation, the absorber material becomes transparent to the emitted radiation, thus releasing the energy stored in the working medium as a ''''giant pulse.
Inventors
- 👤 Gordon Gould
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:00
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/10; H01S3/11; H01S3/1123; H01S3/113; H01S3/05; H01S3/08
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
18 words
A laser system as set forth in claim 1 wherein the gas of said absorber means is atomic.
Claim 2
Dependent Claim
18 words
A laser system as set forth in claim 1 wherein the gas of said absorber means is molecular.
Claim 3
Dependent Claim
27 words
A laser system as set forth in claim 3 wherein the molecular gas of said absorber means is selected from the group consisting of iodine and bromine.
Claim 4
Dependent Claim
16 words
A laser system as set forth in claim 1 wherein the working medium is also gaseous.
Claim 5
Dependent Claim
26 words
A laser system as set forth in claim 5 wherein the gas of said working medium is the same as the gas of the absorber means.
Claim 6
Dependent Claim
24 words
A laser system as set forth in claim 5 wherein the gas of said absorber is different from the gas of the working medium.
Claim 7
Dependent Claim
18 words
A laser system as set forth in claim 7 wherein the gas of the absorber means is molecular.
Claim 8
Dependent Claim
16 words
A laser system as set forth in claim 1 wherein the gaseous absorber means is unpumped.
Claim 9
Dependent Claim
256 words
Apparatus for selecting the predominant mode of oscillation of a laser to the exclusion of other modes comprising: an optical resonator including a laser working medium to produce laser light output and first and second reflector means which are at least partially reflective located opposite respective output ends of the working medium to form a repetitive optical path for the laser light in the resonator, the working medium in said resonator producing laser light output in a predominant mode, pumping means for supplying pumping energy to said working medium to produce said laser light output, gaseous absorber means located in the optical path between said working medium and one of said first and second reflector means for absorbing the laser light output produced by said working medium, said absorber being saturable to become relatively transparent upon receipt of a sufficient amount of light energy froM the predominant output mode of said working medium to open the optical path between said working medium and said one reflector means and release the light energy of the predominant mode stored in said working medium and said absorber means being self-restoring to the absorbing condition after release of the light energy stored in said working medium, and an optical system interposed between said working medium and said absorber means for focusing a predominant mode of the laser light output beam of the working medium onto said absorber means whereby said predominant mode will render said absorber means relatively transparent and prevent other modes from reaching their respective thresholds of oscillation.
Claim 10
Dependent Claim
21 words
Apparatus as set forth in claim 10 wherein the materials of the working medium and the absorber means are the same.
Claim 11
Dependent Claim
67 words
A laser system comprising: a laser-working medium, pumping means for supplying pumping energy to said working medium to produce a laser light output, and a saturable gaseous absorber means located in the optical path of the output of said working medium for absorbing the light energy produced by said working medium until rendered relatively transparent upon receipt of a sufficient amount of energy from said working 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) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |