Patent US2138055A successfully refreshed from Google Patents.
Patent US3975694A successfully refreshed from Google Patents.
US3975694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self Q-switched laser
Assignee: Westinghouse Electric Corp
•
Filing: 1974-02-19
•
Granted: 1976-08-17
•
Expires: 1994-02-19
Abstract
Abstract An improved self Q-switching Nd--UO 2 -glass laser is provided in which a diffusing medium is included, either within the laser rod or externally thereof to increase the effective volume of the laser rod. Various diffusing means are disclosed including optical inhomogeneities, diffusion coatings, and curvilinear resonators.
Inventors
- 👤 Nathan T. Melamed
- 👤 Kenneth B. Steinbruegge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:29
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/14; H01S3/16; H01S3/17; H01S3/10; H01S3/11; H01S3/1123; H01S3/113; H01S3/1691; H01S3/05; H01S3/06; H01S3/0602; H01S3/061; H01S3/08; H01S3/08081; H01S3/1601; H01S3/1603; H01S3/1611
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
65 words
In a self Q-switched solid state laser oscillator system in which the intracavity laser beam is in the form of a small cross sectional area beam, said oscillator comprising a pair of resonator elements, the improvement comprising a diffusing means for scattering/diverging the intracavity laser energy to increase the effective volume of the laser rod which is self Q-switched and, thereby, contributing to laser emission.
Claim 2
Dependent Claim
65 words
In a self Q-switched solid state laser oscillator system in which the intracavity laser beam is in the form of a small cross sectional area beam, said oscillator comprising a pair of resonator elements, the improvement comprising a diffusing means for scattering/diverging the intracavity laser energy to increase the effective volume of the laser rod which is self Q-switched and, thereby, contributing to laser emission.
Claim 3
Dependent Claim
56 words
In a laser system including a self Q-switching solid-state laser rod and a pair of resonators in combination therewith, one of said resonators being partially transmitting at the desired wavelength, the improvement comprising a diffusing means for increasing the effective volume of said laser rod said diffusing means comprises finely divided inclusions within said laser rod.
Claim 4
Dependent Claim
56 words
In a laser system including a self Q-switching solid-state laser rod and a pair of resonators in combination therewith, one of said resonators being partially transmitting at the desired wavelength, the improvement comprising a diffusing means for increasing the effective volume of said laser rod said diffusing means comprises finely divided inclusions within said laser rod.
Claim 5
Dependent Claim
61 words
In a laser system including a self Q-switching solid-state laser rod and a pair of resonators in combination therewith, one of said resonators being partially transmitting at the desired wavelength, the improvement comprising a diffusing means for increasing the effective volume of said laser rod said diffusing means comprises a uniform etch on at least one end of said laser rod.
Claim 6
Dependent Claim
61 words
In a laser system including a self Q-switching solid-state laser rod and a pair of resonators in combination therewith, one of said resonators being partially transmitting at the desired wavelength, the improvement comprising a diffusing means for increasing the effective volume of said laser rod said diffusing means comprises a uniform etch on at least one end of said laser rod.
Claim 7
Dependent Claim
68 words
In a laser system including a self Q-switching solid-state laser rod and a pair of resonators in combination therewith, one of said resonators being partially transmitting at the desired wavelength, the improvement comprising a diffusing means for increasing the effective volume of said laser rod said diffusing means comprises diffusing coating on at least one end of said laser rod, said coating being transparent at the lasing wavelength.
Claim 8
Dependent Claim
68 words
In a laser system including a self Q-switching solid-state laser rod and a pair of resonators in combination therewith, one of said resonators being partially transmitting at the desired wavelength, the improvement comprising a diffusing means for increasing the effective volume of said laser rod said diffusing means comprises diffusing coating on at least one end of said laser rod, said coating being transparent at the lasing wavelength.
Claim 9
Dependent Claim
21 words
The improvement as set forth in claim 1 wherein said diffusing means comprises a curvilinear surface on one of said resonators.
Claim 10
Dependent Claim
16 words
The improvement as set forth in claim 1 wherein said laser rod comprises Nd-UO 2 -glass.
Claim 11
Dependent Claim
28 words
The improvement as set forth in claim 5 wherein said curvilinear surface is at least one selected from the group consisting of a concave and a convex surface.
Claim 12
Dependent Claim
66 words
In a self Q-switched Nd-UO 2 -glass laser oscillator system in which the intracavity laser beam is in the form of a small cross sectional area beam, said oscillator comprising a pair of resonator elements, the improvement comprising a diffusing means for scattering/diverging the intracavity laser energy to increase the effective volume of the laser rod which is self Q-switched and, thereby, contributing to laser emission.
Claim 13
Dependent Claim
66 words
In a self Q-switched Nd-UO 2 -glass laser oscillator system in which the intracavity laser beam is in the form of a small cross sectional area beam, said oscillator comprising a pair of resonator elements, the improvement comprising a diffusing means for scattering/diverging the intracavity laser energy to increase the effective volume of the laser rod which is self Q-switched and, thereby, contributing to laser emission.
Claim 14
Dependent Claim
60 words
In a laser system including a self Q-switching Nd-UO 2 -glass laser rod and a pair of resonators, in combination therewith, one of said resonators being partially transmitting at the desired wavelength, the improvement comprising a diffusing means for increasing the effective volume of said laser rod said diffusing means comprises finely divided inclusions uniformly precipitated within said laser rod.
Claim 15
Dependent Claim
60 words
In a laser system including a self Q-switching Nd-UO 2 -glass laser rod and a pair of resonators, in combination therewith, one of said resonators being partially transmitting at the desired wavelength, the improvement comprising a diffusing means for increasing the effective volume of said laser rod said diffusing means comprises finely divided inclusions uniformly precipitated within said laser rod.
Claim 16
Dependent Claim
63 words
In a laser system including a self Q-switching Nd-UO 2 -glass laser rod and a pair of resonators, in combination therewith, one of said resonators being partially transmitting at the desired wavelength, the improvement comprising a diffusing means for increasing the effective volume of said laser rod said diffusing means comprises a uniform etch on at least one end of said laser rod.
Claim 17
Dependent Claim
63 words
In a laser system including a self Q-switching Nd-UO 2 -glass laser rod and a pair of resonators, in combination therewith, one of said resonators being partially transmitting at the desired wavelength, the improvement comprising a diffusing means for increasing the effective volume of said laser rod said diffusing means comprises a uniform etch on at least one end of said laser rod.
Claim 18
Dependent Claim
72 words
In a laser system including a self Q-switching Nd-UO 2 -glass laser rod and a pair of resonators, in combination therewith, one of said resonators being partially transmitting at the desired wavelength, the improvement comprising a diffusing means for increasing the effective volume of said laser rod said diffusing means comprises a dielectric coating on one end of said laser rod, said coating being microscopically rough and transparent at the lasing wavelength.
Claim 19
Dependent Claim
72 words
In a laser system including a self Q-switching Nd-UO 2 -glass laser rod and a pair of resonators, in combination therewith, one of said resonators being partially transmitting at the desired wavelength, the improvement comprising a diffusing means for increasing the effective volume of said laser rod said diffusing means comprises a dielectric coating on one end of said laser rod, said coating being microscopically rough and transparent at the lasing wavelength.
Claim 20
Dependent Claim
41 words
The improvement as set forth in claim 8 wherein said diffusing means comprises a curvilinear surface on at least one of said resonators, said surface being at least one selected from the group consisting of a concave and a convex surface.
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) | 1979-08-17 | 1980-02-16 | 1980-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-17 | 1984-02-16 | 1984-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-17 | 1988-02-16 | 1988-08-17 | $7700.00 | Window Closed / Lapsed |